Originally ran along the north side of Trafalgar Square; later upgraded to a loop off the A4. The section along Trafalgar Square is now pedestrianized and the remainder is part of the A4.
Road names: Queensway, Porchester Road, Lord Hills Bridge. Also includes Inverness Place and Inverness Terrace, for one-way southbound traffic (south part of Queensway is one-way northbound).
Via South Ealing Underground station and Ealing Broadway railway station. Road Names: Ealing Road, South Ealing Road, Saint Mary's Road, Ealing Green, Bond Street, Ealing High Street, Ealing Broadway, Haven Green, Castlebar Road, Castlebar Hill, Kent Gardens, Scotch Common, Ruislip Road East, Greenford Broadway, Ruislip Road. Haven Green, Ealing Broadway and Ealing High Street are one-way southbound; Bond Street is one-way northbound.
Originally ran from Iver Heath to Denham (now the A412). The northernmost section was later cut in two by the M40 and the old B471, Southlands Road, now goes nowhere.
First used from Slough to Chalfont St Peter; this was upgraded in the 1920s to a portion of a rerouted A332. Reused along old B473 from Beaconsfield to Amersham when the B473 was rerouted to Hazelmere, but became the B473 (now A355) again in 1935.
B473 (defunct)
A4 at Slough
A413 in Amersham
Rerouted to Hazelmere when the A332 replaced the original B472, with the original route to Beaconsfield renumbered to B472. In 1934 the B473 was proposed to be extended south along the B3027, replacing the B474 as a spur to the A332, and rerouted along the B472 to Amersham, with the Beaconsfield-Hazelmere section numbered as a B road (not as B472, however). The extension south was rejected in January 1935 as it would have put the B473 out-of-zone, but the other proposals proceeded as planned and were implemented in April 1935. The Beaconsfield-Hazelmere section was numbered as the B474. Due to an increase of traffic, the B473 was upgraded to Class I status as an extension of the A355 in the 1970s.
Originally ended at the A42 in Streatley, but was rerouted in the 1930s to Benson, with the old route becoming B4526 and B4008 (now B4009). When the A423 was cut in half by the runway at RAF Benson, the B479 was rerouted out of Benson entirely. The section between Benson and the A4130 at Crowmarsh Gifford became a portion of a rerouted A423 in the 1960s with the remainder upgraded to the A4074, which would also replace the A423 after it was rerouted.
Renumbered as a southern extension of the B4041 in 1935. Now unclassified.
A48 in Coldra
B4237 in Newport
The former classification of Ringland Way in Newport. Upgraded to Class I status as the A455 by 1968 and is now part of a rerouted A48 as a portion of the Southern Distributor Road.
Incomplete orbital route through suburbs of Swindon. Begins west of the centre as part of Great Western Way then orbits north and east, becoming Dorcan Way in the east, and continues through southern suburbs.
B4007 (defunct)
A415 on Harcourt Hill
A417 in Harwell
Due to its importance, it was renumbered to A4130 in the early 1930s. The eastern end became a portion of a rerouted A423, but later returned to the A4130 after the A423 was rerouted in the 1990s. A small section in Didcot is now the B4016 and the section between Didcot and Harwell is now the B4493.
A329 Broad Street, Reading
A4155 Caversham Road, Reading
via Queen Victoria Street, Station Road and Tudor Road; declassified by the 1980s.
Originally ran from Crowmarsh Gifford to Benson. Extended south via North Stoke to the B479 in Goring in the late 1920s. The section north of Crowmarsh Gifford (including the entire original section) became part of a rerouted B479 in the early 1930s and the section of old B479 between Goring and the A42 at Streatley became a portion of the B4008. This became a portion of an extension of the B4009 in 1935.
Originally continued along present A4095 to Faringdon. Diverted from previous route when runway at RAF Brize Norton extended.
B4021 (defunct)
B4020 in Clanfield
A40 near Witney
Upgraded to Class I status as a portion of the A4095 in the mid-1920s.
A420 at Stratton Park
A419 near Broad Brunston
Trunked in 1946 (designated T43) and became a portion of the A419 shortly after. The route has since been bypassed, although the central section is now the B4006.
Rectory Road, Rickmansworth
Church Street, Ricksmanworth
Included a spur along Station Road; formerly the A404 and A412 before they were rerouted out of town. Now unclassified.
Originally ran from the A40 at Witney to the A42 near Woodstock. Like many of the B402x roads, it was upgraded to the A4095 in the mid-1920s. The last quarter-mile section however became the A4114 because the A4095 replaced the B4025, instead of the B4024, at the Woodstock end. This later became a spur of the A4095 and is now unclassified.
First used between the B4024 and A42 south of Woodstock. Upgraded early on (before 1925) to Class I status as the A4095.
Next used in 1925 along an old section of the A38 to the east of Norton. Appears on maps up to 1934, but not on 1936 or 1937 maps. Downgraded to a C-road by the 1940s and is now little more than a farm track.
Also used in Warwickshire between Binley and Cross in Hand. This was previously the B4114, then upgraded to the A4114 in the 1940s and renumbered to the A427 in the 1960s and had the B4027 number by the 1990s, probably for continuity, but because the number was in use elsewhere, it was renumbered to the B4428 in the 2000s.
Prior to construction of Coleford relief road, met B4228 in Market Place. Via Mile End.
First used from the A42 (now A44) in Woodstock to the A423 (now A4260) at Sturdy's Castle. Declassified in the mid-1920s due to completion of the A4095, which ran parallel to the B4028.
Via Bulkington. Previously continued along present B4455 to Brinklow. Continued along now unclassified road to Ryton.
Originally ran from the B4027 at Enslow to the B4030 west of Bicester. Like many of the B402x roads, it was upgraded to the A4095 in the mid-1920s, however it did not follow Akeman Road between Kirtlington and Chesterton but followed the next road north. The section along Akeman Road was declassified instead.
Concurrent with V8 Marlborough Street from A422/H3 Monks Way to A421/H8 Standing Way. Concurrent with V7 Saxon Street from A421 to Brunel Roundabout, Bletchley. From this roundabout the road heads west to meet with the A421 and the southern terminus of V1 Snelshall Street.
Can be accessed from the A5 or A361. Formerly much longer as it continued along what is now part of the A361 between Daventry and Kilsby. Today the road is only about 3 miles (5 km) long, linking Kilsby and Rugby, whilst bypassing J18 of the M1.
ViaWootton Bassett. Originally ended at the A420 (now A3102) at Wooton Bassett, but was extended over the B4004 to Broad Hinton in 1935. Declassified in the late 1980s, but the northernmost section, from Cricklade to north of Purton, is now part of the B4553.
Originally ran along Midland Bridge Road in Bath. The route was put out-of-zone when the A4 was extended north in 1935 and was renumbered to B3118 as a result. The northern end is now part of the A367 due to later developments in Bath.
Became a portion of the B4427 in the 1935 renumbering, and is now part of the A4175.
Appears in the 2005 DfT list as "Link in Malmesbury". The road does not exist, but it may have before the A429 bypass was built, although there is no obvious location for the road.
Originally ran from Warmley to Fishponds. In the 1935 renumbering, the section from Warmley to Staple Hill was renumbered to B4427 (now A4175) and the remainder to B4465. The southern section was split in two by the A4174 and is now unclassified and closed to through traffic.
The route is in two parts separated by a mile of the A4018. One runs from Westbury-on-Trym through Henbury to the south end of Cribbs Causeway and the other from J17 of the M5 to New Passage.
Originally ran near Dursley, cutting the corner between the B4064 and B4066 (later A4135). Renumbered as a portion of a new B4066 in the 1935 renumbering.
Originally a loop off the A38 in Berkeley. The northern section became a portion of the B4066 and the remainder a northern extension of the B4509. Only a mile of the ex-B4068 still exists as the B4066, while the remainder is now unclassified, probably due to narrow streets.
First used between Cirencester and Stroud. Due to its importance, it was upgraded to Class I status as the A4116 (now A419) in the mid-1920s.
Next used from The Quarry to the A38. Renumbered as a western extension of the B4066 in 1935.
Used a third time from Hinckley to Sapcote, despite the number being out-of-zone. Renumbered to the B4669 (still out-of-zone) in the 1990s (along with many other roads in Hinckley) when the A47 northern bypass was built.
Originally ran from Stonehouse to Claypits. Due to its importance, it was upgraded to Class I status as the A4096 in the mid-1920s. Much of route now part of a rerouted A419; the western section is now unclassified as the A419 was routed away from Eastington to the M5.
Elmbridge Road; cut the corner between the A419 (now A417) and A40 (now B4063). Later extended along the kink of Old Cheltenham Road when the A40 was rerouted. Now unclassified, likely due to completion of the A40 bypass.
Called Coundon Wedge Drive, it was built to serve the main gates of the now closed Jaguar Browns Lane site. Previously all traffic had to use Browns Lane to access the A4114/A45.
Originally ran along Gloucester Road in Cheltenham, connecting Lansdown railway station to the A40 and A4019. Later renumbered as a counterclockwise extension of the B4075 and is now part of the B4633.
Short road in Stoke Heath, known as Worcester Road throughout its length.
Originally ran in Redditch; its precise route has not been definitely established as the route never showed up on any maps, but it likely ran along Church Green East. Declassified early on and is now pedestrianized.
Start point later moved to an interchange with the A441 and A448; formerly crossed River Arrow on now dismantled bridge west of the A435 junction (much of original route west of the A435 is now gone). Upgraded to the A4189; several road signs for the B4095 remain in Redditch.
B4096
B4184 in Redditch
A441 near Cofton Park
Originally northern terminus was on the A456 in Halesowen. This became the A459 and is now the B4451.
B4097 (defunct)
Banbury Road, Warwick
Smith Street, Warwick
St. Nicholas Church Street; shown on one map as an unnumbered A-road. Now part of the A429 one-way system.
Entire route formerly classified A423 viaNether Whitacre, Furnace End, Over Whitacre, Fillongley, Corley and Coundon. Section from Kingsbury to B4114 (then the A47) later became an extension of the A51. After the A47 was downgraded, the section of A51 beyond Kingsbury was downgraded to the B4098 which ran as far as Coundon on the edge of Coventry. The remaining part of the former A423 was renumbered A4170 into Coventry until the 1980s when the B4098 was extended to Coventry City Centre.
Originally ran along Priory Road in Warwick. Now part of the A445 one-way system.
Former alignment of A41 prior to the opening of M40. Starts in Bicester near the Bicester Village designer outlet and crosses the A43 near M40 J10. Continues via Baynards Green and Aynho then multiplexes with the A4260 from Adderbury for approximately 3.5 miles. It then regains its status from the Warwick Road, Banbury for less than 1⁄2 a mile as it becomes the A422 briefly. It then fully regains its status as the B4100, near Drayton where it continues for 14 miles passing M40 J12 & J13 at Gaydon and Warwick, respectively.
The road is briefly reprised in Birmingham City Centre as a continuation of the A34 until it meets with the B4114 and A47 in Birmingham City Centre. Also used for the section of former A41 from junction with A4540 to A4400 Snow Hill Queensway.
Created in 2020, showing on maps that year. On the November 2019 revision OS VectorMap District map it is shown as unclassified.
First used along Balsall Street in Balsall Common, connecting the A446 to the B4101. Became a portion of a rerouted A4023, but was downgraded back to the B4101 (not B4105, the B4101 having taken over the new route) in 1986 due to completion of the M42.
Next used in 2015 along Broad Street in Coventry. May have been short-lived; little is known about this route. It is listed in a 2015 FoI request response from Coventry Council as well as on other 2011 documents, but it does not appear on a September 2016 revision of the OS VectorMap District map. The route is now unclassified.
Originally ran from A45 Much Park Street to Spon Street in Coventry city center. Upgraded to Class I status by the early 1930s, becoming the A45 mainline (later A4114). Now unclassified.
B4108 (defunct)
B4106 Spon Street, Coventry
A423/A444 in Coventry
Declassified due to later redevelopment of Coventry. The section along King Street is now gone, lost under the A4053.
Originally B4115, then upgraded to A4135 before assuming current number. Via Mancetter.
Originally ran from Binley (near Coventry) to North Kilworth, but was extended in the early 1930s to the southern extension of the A50 (formerly B568, now A5199) at Bosworth Lodge. Around 1935, the original route was upgraded to the A4114 (later A427); the extension hung on for a few more years as the B4111 before being renumbered to the B5414 as it was out-of-zone. The section between Coventry and the A5 was downgraded back to Class II status as the B4027, despite being a duplicate (this was corrected to B4428 in the 2000s). With the impending A14 in the 1990s the eastern section was renumbered to A4303 between the A5 and M1 and A4304 on the section to North Kilworth; both numbers are out-of-zone.
Has two branches in central Birmingham, both follow parts of the former Inner Ring Road. Broken by a section of A47 between A4540 Middleway and Saltley. Connects Birmingham to Coleshill. Except for section of former A4400, entire route formerly part of A47.
Originally ran from Atherstone to Nuneaton. Upgraded to Class I status in the 1920s, becoming the A4131, but was downgraded back to Class II in the 1960s and is now the B4111.
This road ran from the A456 Hagley Road near Birmingham's boundary with Smethwick in Bearwood to a junction with the A441 near King's Norton running via Harborne. It was subsequently replaced by the A4123 south of Harborne and then later by an extended A4030 which also absorbed the A4123 beyond Harborne. During the 1960s, the route became part of the A4040.
Extended to B4100 when A45 diverted onto Small Heath bypass.
Originally ran along Suffolk Street in Birmingham. Upgraded to Class I status early on (the current number was in use by 1932), although due to its short length it is unknown what number it received. Later upgraded to a portion of the A4400 Queensway and is now the A38.
Runs via Metchley Lane, former boundary between Staffordshire and Warwickshire.
Originally ran along Navigation Street in Birmingham. Due to its short length, it is not known how long the B4129 number lasted; a map showed the route as Class I, but with no number (it was the A4166). Now unclassified after all traffic was routed out of the center of Birmingham.
B4130 (defunct)
Linked Bull Ring and Camp Hill in Birmingham as alternative to A41. Ran down Jamaica Row (no longer exists), Cheapside and Ravenhurst Street. Declassified (and partially gone) due to extensive redevelopment in the area.
B4131 (defunct)
Ran between Digbeth (then the A41) and B4132, Curzon Street via Meriden Street and New Canal Street. Now unclassified.
Erdington High Street (original A38). Mostly one way. Due to pedestrianised northern part of High Street, diverted along New Street. Previously used for the section of A453 between Perry Barr and Sutton Coldfield.
Originally unclassified, it was part of the A345 during the 1970s. A road of the same number originally ran from Salford Circus, Birmingham to a junction with the A446 in Curdworth. When this was upgraded to A road, the B4141 was reused for the previously unclassified road between the A446 junction and A423 near Kingsbury. This was upgraded to A road status too when the A38 Sutton Coldfield bypass opened (although the original route along Old Kingsbury Road has been closed to traffic).
Originally ran in Birmingham from the A455 (now A34) New Town Row to the A41 Camp Hill. Upgraded to Class I status, with all except the southern end becoming the A45 by the mid-1940s. Now part of the A4540.
Prior to 1927, the road started at the junction of Broad Street and Stafford Street in Wolverhampton city centre. Some maps indicate the B4155 ends at the junction with the B5011 although some signs on the ground indicate it continues to the next roundabout where the B4155 (unsigned) turns left to end on the modern A5. The road ahead is now closed and gated but the B4155 originally continued along that road to a junction with the original A5.
Lanes split to form one way system in Cheslyn Hay.
B4157 (defunct)
Ran from New Road, Willenhall (original A454) to A462 in Ashmore Lake via Lower and Upper Lichfield Street. Later extended to Bilston Lane (A463, then A454, now B4484). Section through and north of Willenhall declassified in 1970s, southern section now B4484. Signs for B5147 (presumably a typo) at Bloxwich Road South junction with A462 in Lane Head, near New Invention were installed as recently as 2012 replacing accident damaged ones.
This was previously used for the following roads in Wolverhampton: Garrick Street, Market Street and Princess Street. After Dudley Street (the original route of the A459) was pedestrianized in the 1960s, these streets formed a rerouted A459 until all roads in the city centre were declassified in 1986 due to completion of the Inner Ring Road. Another B4158 appeared in Dudley on OS maps between the 1950s and 1970s. Perhaps due to the duplicate number, it was renumbered to B4588.
B4159 (defunct)
This was used for the northern half of School Street Wolverhampton until the southern section opened in the 1960s. Prior to then the A449 had run along Worcester Street and Victoria Street in the town centre. Upon the opening of the southern part of School Street, the roads exchanged designation with Victoria Street becoming the B4159 instead. In common with all roads in the city centre, Victoria Street was declassified in 1986 due to completion of the Inner Ring Road and work was carried out in 2022 and 2023 to pedestrianize the street.
B4160
Redditch Ring Road. One-way throughout its length. A road of the same number ran down Lower Stafford Street (between Cannock Road and Stafford Road) in Wolverhampton until the 1960s but is now part of the A449.
Previously also met A463 at A4039 junction prior to opening of Black Country Route (A463/A454). This was part of the London-Holyhead coaching route prior to the opening of Wellington Road as part of Thomas Telford's improvement work. This route number was briefly allocated to the current A4126.
Ran down Roebuck Lane and Galton Bridge between Smethwick and West Bromwich. Galton Bridge is now closed to traffic while Roebuck Lane was severed by the M5.
King Street was part of A461 until Dudley Southern Bypass opened. Blowers Green Road part of A459 until bypass opened. Between 1922 and 1925, this was allocated to the current A4101 between the A461 and A449 (then A4040) junctions.
This originally ran from the A450 to the A456 along Park Road. When the A450 through West Hagley was downgraded, this became the B4187 too. The old route remains as a spur of the B4187.
Malvern Road was the route of the A48 until the 1920s.
B4207 (defunct)
Now the B4312, it formed a bypass for the A40 through Carmarthen prior to the opening of the A40 bypass. A previous B4207 now forms the A4103 in Worcestershire.
The road originally ended on the A4104 but was later extended along the course of the A440 to Barnard's Green and later still along the remaining former A440 (which had become the A4532) to Malvern.
B4212 (defunct)
A38 at The Grove
A440 (now A4104) at Holly Grove
Declassified after the 1990s. Now just an access road.
Route of the number 1 bus. Via Edgbaston and Moseley. A road of the same number passed through Wyche Pass in Malvern but was upgraded to the A4105 in the 1920s. Part of it became the B4218 in the 1960s, the rest unclassified.
This road partly follows the earlier route of the B4217 but is diverted in the area of Fossil Bank. Via Colwall Green and Upper Colwall. Route was A4105 between the 1920s and 1960s.
Originally ran from Bosbury to Stony Cross. Renumbered to a portion of the A4154 after World War II, but downgraded soon after to the B4220 (the B4218 number was already in use elsewhere).
B4219
A4103 at Storridge
B4232 in Malvern
Marked unsuitable for HGVs due to narrow width of road.
Originally ran from Monmouth to Huntley; was the lowest numbered Class II road in Wales. Due to its importance, it was upgraded to Class I status early on, becoming the A4136 in the late 1920s.
Mostly follows the former route of the Heads of the Valley Road (A465).
B4243 (defunct)
A467 in Bassaleg
A468 in Rogerstone
Renumbered to A4072 (now A467) in 1935.
Ran along Lleyncelyn Road, North Road and Porth Street in Porth; now part of the B4278 one-way system. The route is shown as an A-road in the early 1970s, so the number was probably assigned after the completion of the A4058 bypass. Although no maps have been found showing the B5243 number, it is possible that the number was briefly assigned before the renumbering to the B4278.
Upgraded to Class I status as the A4051 in the 1960s, but later road network improvements in Cwnbran led to the route being bypassed and was then declassified.
via Llanmartin and Magor. A road of the same number previously ran from Little Mill, near Pontypool to Abergavenny. It was upgraded to A4125 and now forms part of the A4042.
Originally ran from Blaenavon to Govillion as the northern continuation of the A4043. Renumbered as a portion of a northern extension of the B4246 in 1935.
B4248
B4246 near Blaenavon
A467 at Brynmawr
via Llanelly Hill
B4251
A467 in Portllanfraith
A467 in Wattsville
The two spurs off the main route in Portllanfraith were originally the A472 and A4048, the latter being the original northern route of the B4251 before the Blackwood bypass opened.
B4252
A469 in Pengam
A472 south of Hengoed
via Fleur-de-lys
B4253 (defunct)
A4048 in Blackwood
A4049 in Pengam
Cefn Road, Twynyffald Road and Fair View; became part of B4254 and is now unclassified.
A4055
A4160
Exact line is contradicted by map makers but may have followed Barry Road
B4254
A4054 in Edwardsville
A4048, east of Blackwood
connects the Taf and Sirhowy valleys. Via Gelligaer
B4255
High Street, Bedlinog
A472 south of Nelson.
The two arms south of Nelson were historically the A472. Via Trelewis
a spur of the B4257 in Rhymney allows to access the southbound B4257
B4257
A469 in Pontlottyn
A465/A469 near Lechrydd
The Rhymney bypass partly occupies the former northern section of the road. Mostly follows the former route of the A469. Passes through Rhymney town centre.
B4258 (defunct)
The number was used for the gap in the A4055 between Grangetown and Llandough, which was a toll road, until 1935. The A4055 was then extended along the majority of the B4258 leaving just a short section between Canton and Llandaff which was later declassified. The A4055 later became the B4267. An earlier B4258 ran via Albany Road and is now part of the A469.
B4259 (defunct)
Ran from Butetown (A470) to A48 across the river from Cardiff Castle. Now the A4119, it ran via Grangetown.
Originally ran from Ystrad Rhondda to Llantrisant. The section from Ystrad to Tonyrefail was upgraded to the A4093 in 1924, but a year or so later, the entire route was upgraded to the A4119. Much of route now unclassified or part of the B4278.
B4272 (defunct)
Now part of the B4595. Connected A473 and A4058 near Treforest.
Ran from junction with B4273 in Pontypridd to A470 in Pont Sion Norton. Bridge over River Taff now A4223, most of the remaining part replaced by A470 dual carriageway.
This road was originally the A4233 and A4058 but following the completion of the Porth Relief road these roads were downgraded.
B4279 (defunct)
There have been two roads with this number: a short lived B4279 ran between Bridgend and Swansea which was upgraded to the A4093 in 1924 and a B4279 in Wiltshire. This now unclassified route connected the A420 (now the B4069) at Langley Burrell to the A420 east of Sutton Benger.
one way in an eastern direction only. Called Harborne Road. A previous B4284 was a dead end route starting at Cymer in South Wales but was upgraded to the A4107 and extended to Rhondda in 1925.
Ran from St Thomas in Swansea to Llansamlet. Later upgraded to A4217, it was partly downgraded again during the 1970s but numbered B5444 despite being still in use for a road in Flint.
Originally ran from Ystalyfera to Gurnos. Renumbered as a northern extension of the A4067 in 1935, but due to upgrades in the area much of the route is now the B4599.
This branch is part of the original alignment of the B4304 which started on the then A48 and ran via Park Street (now pedestrianised) and Stepney Street.
B4305 (defunct)
Short link road between B4304 Station Road and A48 (later A484) Swansea Road. Partly replaced by the A4214.
Originally ran along Market Street in Llanelli; too short (only 100 yards) to appear on maps and may have never appeared on any maps at all as it was decommissioned by 1935. Th route was still Class II in the 1960s, but as a spur of the B4304. The original southern end is now gone, lost under Argos.
B4307 (defunct)
Ran down Vaughan Street in Llanelli; too short (one block long) to appear on maps. Unclassified by the 1960s and is now pedestrianized.
The two arms of the B4312 north of Carmarthen are the original route of the A40 before the bypass opened. The right hand arm passes an obelisk in memory of Lieutenant General Sir Thomas Picton who died at Waterloo.
Starts at Main St, Fishguard (A487), winds generally S or SE finishing in Narberth (junction with B4314), via Gwaun Valley, Llanychaer, crosses B4329 at Greenway, Rosebush, Maenclochog, crosses A40; approximately 21 miles.
Originally started in centre of Sageston village. Due to St John's Hill in Tenby being one-way, traffic heading the other way has to use Greenhill Road.
road names: Water Street, Bush Road, Pembroke Street, High Street, Bellevue Terrace in Pembroke Dock.
B4323 (defunct)
Short road in Pembroke Dock starting on Fort Road and continuing to then A477 (now A4189) via Laws Street and Bush Street. Bush Street now B4322, rest declassified.
B4324 (defunct)
Ran from A4076 in Johnson to Neyland where a ferry crossed the river to reach the A477. The B4324 subsequently was upgraded to form part of the A477. When the road bridge opened carrying the A477, the ferry ceased and the southernmost part became an extension of the B4325.
via Waterston and Scoveston Fort. The section through Neyland from the Quay to the current A477 was originally the B4324 and was later upgraded to the A477 (which used a ferry to cross the river). When the road bridge opened, the former B4324 became part of the B4325.
B4326
A4076
A4076
Charles Street in Milford Haven. One way for most of its length.
Mill Street in Aberystwyth. Now part of a rerouted A487.
Also appears in the circa 2002 DfT Card Index as "Reserved for Gwndwn goyn - Parcllyn Road" This is generally assumed to be a route from Park Avenue to Parc Y Llyn in Aberystwyth, but for some reason never used.
via Dorstone, Peterchurch, Thruxton and Turkey Tump.
B4349
B4348 at Webton
A465 near Belmont Abbey
B4350
A470 north of Llyswen
A438 west of Whitney-on-Wye
via Hay-on-Wye. The road through Hay-on-Wye was the A438 until the 1960s when it swapped route with the B4350 which used the current A438 route. This meant that traffic on the A438 avoided the Whitney Bridge which is a toll bridge with a weight limit.
This almost dead straight road (along with the nearby current B4112) was built in 1800 during competition for carrying the mailcoaches between London and Dublin. In parts a very narrow road.
Originally ran from Llan Ffestiniog to Conwy via Betws-y-Coed. By 1932, the southernmost section had become a portion of a rerouted B4408 to Congl-y-Wal and the A496 from there to Blaenau Ffestiniog. By 1939, the B4408 was decommissioned, with the A496 extended over it further to Betws-y-Coed and the section from there to Conwy renumbered to the B5106. Sections became the A4108 and A5110 by 1956, but the ex-B4408 is now the A470 from Llan Ffestiniog to Betws-y-Coed and B5106 north of there; the section just south of the A5 is now unclassified.
B4408 (defunct)
First used from the B4391 at Pont Tal-y-bont via Tanygrisiau to the B4407 at Rhiwbryfdir. By the end of the 1920s, the southern half was a northern extension of the A496 and the northern section declassified (this section became the B4414 in 1935 when it returned to Class II status). The B4408 was then rerouted south of Blaenau Ffestiniog along the-then B4407 to the A487 near Gellilydan. This B4408 was renumbered to A4108 (now A470) before 1956.
Originally connected linked the B4407 and B4408 south of Blaenau Ffestiniog. Renumbered as a northern extension of the A496 in the mid-1920s and is now unclassified after the A496 was rerouted.
Renumbered as a western extension of the A499 in 1935.
A496 in Rhiwbryfdir
A496 in Pengwarn
Initially a portion of the B4408 but quickly declassified. Received the B4414 number when the route returned to Class II status in 1935. Much of route now part of the A496, except the northmost third which was bypassed and is now unclassified.
Exists in two sections; originally connected by a ferry across the Menai Strait, but the ferry was discontinued in 1954.
B4420 (defunct)
B5108 (later A5025) in Four Crosses, Menai Bridge
B4422 in Bethel
Originally ended at the B4421 in Newborough, but was quickly extended to Bethel. Much of route became the new A4080 in 1935; the portion into Bethel became the B4422 because the A4080 did not go into Bethel and the northern section became the B5420 (now A5025) because the A4080 did not cross the A5 (the old number would have been out-of-zone north of the A5).
B4421
A4080 in Newborough
B4419 in Llangaffo
B4422
A4080 south of Bethel
B5109 in Llangefni
Originally began at the B4423 in Llanfaelog, but this was bypassed by the A4080 in 1935 and the route was cut back to Bethel. Originally ended at the A5 near Llangristiolus, but was extended to Llangefni in the 1960s.
B4423 (defunct)
B4422 in Llanfaelog
B5112 in Trefor
The section south of the A5 was upgraded to a portion of the A4080 and the northern third became a portion of a rerouted B5112 in 1935.
Originally ran along Queen Street in Carmarthen. Likely classified at the last minute (probably early 1923), as the other B442x roads are on Anglesey. Despite surviving the 1935 renumberings, the route is now unclassified and one-way eastbound.
Previously numbered B4111, A4114, A427, B4027. Numbered B4428 in 2000s.
First used from Berkeley to Sharpness. In the 1935 renumbering, it was recommended that the route be extended to the A4135, but this never happened; the B4066 was extended west to Sharpness and the B4428 was declassified instead.
Next used from the A429 Fosse Way west of Chesterton to Kemble Airfield (now Cotswold Airport). Became a portion of a rerouted A429 in the 1960s.
Declassified; the junction with Wallows Lane at its southern end has closed to vehicular traffic.
B4431 (defunct)
B4432 in Coleford
A48 in Wenchford
Much of route now unclassified except for the extension from Coleford to the Robin Hood junction which is part of the B4428.
B4432
A4136 at Five Acres
B4226 at Broadwell
Originally began at Symonds Yat Rock; this section is now unclassified.
Originally ran from Marian's Inclosure to Tutshill. By 1932 the first section into Coleford became an extension of the B4431 while the remainder was renumbered to B4228. Later renumberings rerouted the B4228 to take over the section north of Coleford.
B4433
A4067/B4593 in Oystermouth
unclassified road at Mumbles Pier
Originally ran from North Cornelly to Cwrt-y-Defaid. Became a spur of the B4283 in the 1935 renumbering and is now part of the B4283 mainline.
In the 1935 renumbering, it was proposed that the route be renumbered as an extension of the B476. While this was approved by the MoT, this change never happened.
B4107 (later A4114) Queen Victoria Street, Coventry
In the 1960s, the eastern half was wiped out by the A4053; the western half is now the B4101. The route was occasionally labeled as B4464 (a typo), but the origin of this error is uncertain.
Number also appears in Wednesfield on online maps before 2009, but this is a typo for the B4484. March End Road is now part of the U99 and Alfred Square Road is possibly unclassified.
Originally ran from Wolvey Heath to Cross in Hand. Declassified in the mid-1970s due to completion of the M69. The ex-B4455 crosses the current B4455 at Cloudesley Bush.
B4456 (defunct)
A461 in Pleck, Walsall
A461 northeast of Walsall town center
Walsall Ring Road; loop completed by the mid-1940s. The southwest corner was always part of the A461 mainline while the northwest corner never existed as part of the B4456. Now upgraded to the A4148.
Provisional number for the former A49 through Ludlow after it was rerouted onto the eastern bypass. Number never used; the B4361 was extended over the route instead.
B4457
A4110 at Stretford Bridge
A44/A4412 at Golden Cross
Originally continued to the original A44 at Upper Hardwick as the A44 did not exist at this location; this is now part of the A44.
B4458
A48 (now B4293) Monnow Street, Monmouth
A446 in Monmouth
Declassified.
Typo for the B4588.
B4459
A485 south of Pencader
B4338 in Talgarreg
Original route to Rhos Ymryson declassified since the 1970s.
Originally ran from Bow Street to Capel Dewi. Upgraded to Class I status in 1935, becoming the A4159.
B4460 (defunct)
Craven Park Road, Harlesden
High Street, Harlesden
Manor Park Road, Harlesden; now the northwest–southeast carriageway of the A404 gyratory.
Passes through Chester Park, Staple Hill and Pucklechurch, ending near Junction 18 of the M4. Prior to c1962, continued east from Pucklechurch, through Hinton, to A46 at Burton.
Originally ran along Wylds Lane in Worcester; the eastern half may have been part of an extended B4205 before the entire route received the B4485 number. One old map shows the route as B4085, despite that number existing on a route near Eversham since 1922. Whatever the result, the route was short-lived; the western half is now unclassified and the eastern half part of the B4205.
B4486
A4281 in Pont-y-gof
A4046 in Waun Lwyd
B4487
A4161 in Roath
A48 in St Mellons
Exists in two sections, separated by a 1.3 km (0.81 mi) gap.
Road originally ran through Harwell, Oxfordshire and terminated on the A417 but was extended to Chilton in 2016 to meet a new junction with the A34 and A4185.
Also allocated to the bypassed section of the A4071 in Rugby. Signs were erected showing the B4500, but when Warwickshire County Council realized that the number was a duplicate, a new sign was erected showing the B4642 number. Soon after this, all signs were patched over to show B4642.
Road is approximately 20 miles long, heading in a south westerly direction from Herefordshire into South Wales. Near its western end it forms a part of the border of the Brecon Beacons National Park.
Road lasts approximately 3⁄4 of a mile. Although on OS maps it is not displayed as the B4522, it is signposted as the B4522 on the A4061 in the local vicinity. Maps show it as Dunraven/Gwendoline Street, Treherbert.
B4523 (defunct)
A4119 Dunraven Street, Tonypandy
A4058 Miskin Road, Tonypandy
Bridge over the Rhondda gone due to the present A4058; the eastern end is now the B4278 and the remainder unclassified.
Originally ran from Brimfieldcross into Brimfield itself. Upgraded to Class I status, becoming the A4105 in 1971, but has been declassified again due to completion of the A49 Brimfield bypass.
Begins near M4 J16 and banks in a north-westerly direction. A change in the road system in Blunsdon meant closure of part of the original route at Lady Lane, which is no longer accessible to motor vehicles. The B4534 regains its status at the northern end of Lady Lane where it continues to its terminus at the A4311.
Originally ran in Stratford-upon-Avon from Evesham Place to the A34 Birmingham Road. Upgraded to Class I status in the 1970s as the A4134, but within 10 years this was renumbered to a portion of the A4390.
B4535 (defunct)
A422/A439 in Stratford-upon-Avon
A34 in Stratford-upon-Avon
Ran past Shakespeare's birthplace; now pedestrianized.
Originally portions of the A425 and B4036, but gained its own number after the A45 Western Avenue was built. Declassified after the A45 was rerouted again.
Reserved in 2003 for the "Dawley Donnington Distributor Road" in Telford. This is probably referring to what is now the B4373, although it is unknown if the B4543 number was ever used on the ground.
The northern end was split off when M6 J5 was built, and part of the road is now gone, lost under the roundabout. The remainder along Chester Road is now unclassified and Hall Road is now part of a rerouted B4118.
Link road between Wembley Stadium and industrial estates with IKEA store and Tesco in Brent Park
Originally ran from Brecon to Bishop's Meadow. Upgraded to Class I status around 1960, becoming the A4062. But when the A40 Brecon bypass opened in 1980, it returned to Class II as the B4602 except for the southernmost section, which was declassified.
Parallels A40 in the Usk valley; passes through Pencelli, Talybont-on-Usk, Cwm Crawnon and Llangynidr. Likely classified in the mid-1930s, as it does not appear on a 1934 map, but it does appear on a 1939 map.
Also appears on the former A459 north of Dudley. This is a typo for the B4588.
Roads named Burton Road, Highland Road and Salop Street
B4589 (defunct)
Described in the c. 2002 DfT Road List as being located in Telford. The route does not appear on any maps, so it is likely defunct and may have even been a typo on that list.
Previously part of A463 (later A454) when the first section of The Keyway opened. Not signed as B4590; eastbound is signed as part of the A462 and westbound is signed as part of the B4484.
Road originally started at Llantwit Fardre but following the completion of the Church Village bypass, most of the former A473 route became part of the B4595. The A4058 near Glyntaff also became part of the B4595. This road also has three road links, one near the A470 in Glyntaff where the A4058 originally started, the other in Tonteg near Powerstation hill and another near Beddau where the A473 originally ran.
Number apparently appears on a slightly blurred late 1950s map along Wales Farm Road in North Acton, but the true number is not known. Now part of the A4000 one-way system.
Assigned to the former A469 through Caerphilly; although the number seems to be a typo for the B4263, it did appear on maps as well as on official documentation in the 2000s. Possibly due to confusion, the section south of the B4600 is now part of the B4263 and the northern section is now unclassified.
Former portion of the A34 road; out-of-zone as it runs south of the A4. Until it was replaced by the Newbury Bypass it was originally the only part of the road between Oxford and Winchester that was not a dual carriageway. Unknown why the B4640 number was chosen as it has no relation to the A34.
Old route of the A4071 before the building of the Rugby Western Relief Road.
B4643
B4528 at Patterdown Farm
A4 at Rowden Hill
Formerly the A350 before it was rerouted onto what is now the B4528. Some maps label the route as the B4634 (a typo).
B4644 - B4649
unused
B4650 (reserved)
Reserved in 2006 for a downgrade of the A417 between Cirencester and Faringdon. The road has not yet been numbered and there are currently no plans to do so.
B4651 - B4665
unused
B4666
Dodwells Roundabout (A5/A47) in Hinckley
B590 (Hinckley inner ring road) at Hinckley
Out-of-zone as it runs east of the A5; former portion of the A47.
B4667
B590 in Hinckley
A47 Hinckley northern bypass
Given a Zone 4 number, despite it existing north of the A5; former portion of the A447.
B4668
B590 in Hinckley
A47 Hinckley northern bypass
Out-of-zone as it runs east of the A5; former portion of the A47.
Was the B579 from 1922 to 1926, the A5070 from 1926 to the late 1970s and the B4069 from then until 1990. Given a Zone 4 number, despite existing north of the A5.
Runs west through gravel workings and the Cotswold Water Park as Spine Road (begun 1971),[3] then turns south on older road through Ashton Keynes towards Wootton Bassett.
B4697 - B4729
unused
B4730 (defunct)
Typo for the B4130.
B4731 - B4739
unused
B4800
Section of former A483 in Newtown, designated in 2019 after the town's bypass opened.
B4801
Section of former A489 in Newtown, designated in 2019 after the town's bypass opened.
