1922 Road Lists/Zone 4 Class II
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| Number | Route | Notes |
|---|---|---|
| B400 | London (Chancery Lane) | |
| B401 | London (Wellington Street, Bow Street, Endell Street and High Street, Holborn) | Wellington Street, Bow Street unclassified; High Street A40 |
| B402 | London (Great Queen Street, Long Acre and Coventry Street) | Coventry Street now unclassified |
| B403 | London (Broad Street and High Holborn (part)) | A40 |
| B404 | London (St Martin's Lane, St Andrew Street) | Southernmost section pedestrianised |
| B405 | London (Trafalgar Square (North Side) and Duncannon Street) | A4/pedestrianised |
| B406 | London (New Bond Street and Old Bond Street) | Old Bond Street now unclassified |
| B407 | London (Holland Road) | A3220 |
| B408 | London (Askew Road, Paddenswick Road, Dalling Road (part)) | |
| B409 | London (Stamford Brook Road, Bath Road and Turnham Green Terrace) | Turnham Green Terrace now B491 |
| B410 | London (Craven Road, Craven Hill, Leinster Terrace) | |
| B411 | London (Portchester Road) | |
| B412 | London (Cornwall Road, St Quintin Avenue, North Pole Road) | Ladbroke Grove B450 |
| B413 | London (Clifton Gardens, Shirland Road and Kilburn Lane to Chamberlayne Road) | Malvern Road unclassified |
| B414 | London (Walterton Road, Cambridge Road and Cambridge Avenue) | Cambridge Avenue unclassified |
| B450 | Willeseden (Kilburn Lane (part) and Chamberlayne Road (part)) | |
| B451 | Willesden (Brondesbury Road and Harvist Road to Kensal Green) | Westernmost section unclassified |
| B452 | Willesden (Duddinghill Lane - Blackbird Hill) | A4088 |
| B453 | Willesden - Neasden (Neasden Lane (part)) | |
| B454 | Blackbird Hill - Kingsbury Green | |
| B455 | Ealing - Ruislip - Batchworth Heath | Northolt - Batchworth Heath A4180 |
| B456 | Perivale - Alperton | Central section unclassified/A40 |
| B457 | Link at Harrow (Roxeth) | A4005 |
| B458 | Link at Harrow joining A4005 and A404 | College Road, now unclassified |
| B459 | Loop at Harrow Weald | Unclassified |
| B460 | Harrow Weald - Watford | A4008 |
| B461 | (Unappropriated) | Not used |
| B462 | Watford - Radlett | |
| B463 | Loop at Pinner | Paine's Lane; now unclassified |
| B464 | Harlington - Hillingdon | Unclassified/A437 |
| B465 | Yiewsley - Hayesend | Yiewsley - Stockley Park A408 |
| B466 | Hillingdon - Ruislip - Pinner | Hillingdon - Ickenham A437 |
| B467 | Uxbridge - Ickenham | |
| B468 | Northwood - Watford | A4125 |
| B469 | Northwood - Batchworth Heath | |
| B470 | Datchet - Cowley | Actually started on the A4 in Langley |
| B471 | Iver Heath - Denham | Mostly A412; northern section severed by M40 |
| B472 | Slough - Stoke Poges - Chalfont St Peter | Quickly upgraded to a diverted A332, now B416 |
| B473 | Slough - Beaconsfield - Amersham | A355 |
| B474 | Stoke Poges - Farnham Royal | became a spur of the B473, now a spur of B416 |
| B475 | Junction with A4 - Slough Station | Mackenzie Street. North half unclassified; south half buried under shopping centre. |
| B476 | Taplow - Wooburn | Unclassified |
| B477 | Junction with A4 at Hare Hatch - Wargrave | |
| B478 | Sonning - Play Hatch | |
| B479 | Reading (Caversham) - Streatley | Now A4074 to Chazey Heath, then unclassified to Goring Heath, B4526 to Goring, B4009 to Streatley |
| B480 | Henley - Watlington | |
| B481 | Nettlebed - Howe Hill | |
| B482 | Marlow - Stokenchurch | |
| B483 | High Wycombe - Gt Missenden | A4128/unclassified |
| B484 | Link in High Wycombe | A404 |
| B485 | Chenies - Chesham - Gt Missenden | Chenies - Chesham downgraded in the 80s |
| B486 | Boxmoor - Hemel Hempstead - Leighton Buzzard | A4146/unclassified/A4012 |
| B487 | Hemel Hempstead - Redbourn - Harpenden Common | Rerouted several times in Hemel Hempstead |
| B488 | Tring - Leighton Buzzard - Fenny Stratford - Newport Pagnell | Tring section B486; Leighton Buzzard - Fenny Stratford became A4146 (now bypassed); Fenny Stratford - Newport Pagnell obliterated by Milton Keynes. |
| B489 | Wendover (Halton) - Ivinghoe - Dunstable | Southernmost section unclassified |
| B4000 | Newbury - Lambourn | Unclassified |
| B4001 | Chilton Foliat - Wantage | Childrey - Wantage B4507 |
| B4002 | Link in Marlborough | Now A346 (older main route to the west is now unclassified) |
| B4003 | West Kennett - Avebury | |
| B4004 | Broad Hinton - Wootton Bassett | Now unclassified |
| B4005 | Chisledon - Wroughton | |
| B4006 | Link in Swindon | Regent Street/Victoria Road. Now unclassified. |
| B4007 | Harcourt Hill - Wallingford - Harwell | A4130/B4016/B4493/unclassified |
| B4008 | Crowmarsh Gifford - Benson | Became part of a rerouted B479, then a rerouted A423. Northern half lost under Benson Airfield; southern half A4074/unclassified. |
| B4009 | Benson - Watlington - Little Kimble | |
| B4010 | Little Kimble - Wendover | Via Ellesborough. Now unclassified. |
| B4011 | Princes Risborough - Thame - Bicester | Princes Risborough - Thame now A4129 |
| B4012 | Postcome - Thame | |
| B4013 | Shillingford - Thame | Now A329 |
| B4014 | Stadhampton - Oxford | Now B480 |
| B4015 | Clifton Hampden - Chislehampton | |
| B4016 | Junction with B4007 - Didcot Station | B4493 |
| B4017 | Abingdon - Eynsham | Always ended at Farmoor and never reached Eynsham |
| B4018 | Abingdon (Broad Street) | Unclassified |
| B4019 | Faringdon - Broad Blunsdon | |
| B4020 | Faringdon - Clanfield - Burford | Faringdon - Clanfield now A4095 |
| B4021 | Clanfield - Bampton - Witney | Now A4095 |
| B4022 | Kingston Bagpuize - Witney - Charlbury - Swerford | Kingston Bagpuize - Witney now A415 |
| B4023 | Link at Witney | Quickly became A40; now A4095 |
| B4024 | Witney - Woodstock | Now A4095; easternmost section unclassified |
| B4025 | Link near Bladon | A4095 |
| B4026 | Charlbury - Chipping Norton | |
| B4027 | Wheatley - Islip - Over Kiddington | Through Enslow now A4095 |
| B4028 | Woodstock - Sturdy's Castle Inn | Unclassified |
| B4029 | Bletchingdon Station - Bicester (Bignell House) | A4095; Akeman Street unclassified |
| B4030 | Bicester - Lower Heyford - Enstone | Easternmost section became A4095, now B4030 again. |
| B4031 | Swerford - Deddington - Aynho - Finmere | Barley Mow - Finmere A421 |
| B4032 | Linslade - Winslow | Easternmost section unclassified |
| B4033 | Winslow - Stony Stratford | Great Horwood - Stony Stratford now unclassified |
| B4034 | Buckingham - Fenny Stratford | Buckingham - Bletchley A421 |
| B4035 | Evesham - Chipping Campden - Shipston-on-Stour - Banbury | |
| B4036 | Banbury - Daventry - Market Harborough | Banbury - Daventry A361; Daventry - Market Harborough unclassified. |
| B4037 | Badby - Newnham - Weedon Bec | Now unclassified west of Newnham; never reached Weedon Bec. |
| B4038 | Daventry - Kilsby | Now A361 |
| B4039 | Chippenden - Acton Turville | |
| B4040 | Old Sodbury - Malmesbury - Cricklade | |
| B4041 | Wootton Bassett - Cricklade | Northernmost section B4553; rest unclassified |
| B4042 | Wootton Bassett - Malmesbury | |
| B4043 | Link in Bath | Ran via Midland Bridge. Renumbered as B3118 in 1935 when the extension of the A4 caused it to then be out of zone. Northernmost section now A367 |
| B4044 | Bath (Lower Weston - Newton St. Loe) | Now A4 |
| B4045 | Keynsham - Willsbridge | A4175 |
| B4046 | Hanham - Kingswood | |
| B4047 | Warmley - Staple Hill - Fishponds | Unclassified/A4175/B4465 |
| B4048 | Fishponds - Kingswood | |
| B4049 | Bristol - Crofts End - Staple Hill | B4465 |
| B4050 | Bristol (Horse Fair and Newfoundland Road) | Replaced by A4032 |
| B4051 | Bristol (Ashley Road, Lower Ashley Road and Warwick Road) | |
| B4052 | Bristol (Sussex Place and Ashley Down Road) | |
| B4053 | Bristol (Colston Street, Upper Maudlin Street and Jamaica Street) | B4051 |
| B4054 | Bristol (Zetland Road, Cranbrook Road, Linden Road to Parry's Hill) | |
| B4055 | Bristol - Henbury - Redwick | Southernmost section and Cribbs Causeway now A4018; northermost section B4064 |
| B4056 | Junction with B4055 - Southmead - Filton | |
| B4057 | Shirehampton - Henbury - Stoke Gifford | Most of Henbury - Stoke Gifford lost under Filton Airport |
| B4058 | Eastville - Winterbourne - Iron Acton - Wootton-under-Edge | |
| B4059 | Iron Acton - Yate | |
| B4060 | Chipping Sodbury - Wootton-under-Edge | |
| B4061 | Alveston - Buckover - Whitfield | A38 except for the northernmost section |
| B4062 | Link at Wootton-under-Edge joining B4060 and B4058 | |
| B4063 | Wootton-under-Edge - Kingscote | B4058 |
| B4064 | Wootton-under-Edge - Lower Cam | B4060 |
| B4065 | Dursley - Stinchcombe | B4066 |
| B4066 | Tetbury - Dursley - Lower Cam - Cambridge | A4135 |
| B4067 | Tetbury - Junction with A433 | Unclassified |
| B4068 | Stone - Berkeley - Berkeley Heath | Northernmost section B4066; rest unclassified |
| B4069 | Cirencester - Chalford - Stroud | A419 |
| B4070 | Ryeford - Eastington - Claypits | Became A4096; now unclassified/A419 |
| B4071 | Claypits - Frampton-on-Severn - Saul | |
| B4072 | Stroud (Pitchcombe) - Gloucester | Outside Gloucester now A4173 |
| B4073 | Painswick - Gloucester | |
| B4074 | Barnwood - Longleavens | Unclassified |
| B4075 | Charlton Kings - Prestbury | |
| B4076 | Link in Cheltenham | Became B4075; now B4633 |
| B4077 | Teddington Hands - Stow-on-the-Wold | Western section became A438, now B4077 again |
| B4078 | Winchcomb - Sedgeberrow | |
| B4079 | Oxenton - Bredon | |
| B4080 | Tewkesbury - Bredon - Birlingham | |
| B4081 | Junction with A44 - Chipping Campden | |
| B4082 | Pershore - Pershore Station - Junction with B4084 | A4104 |
| B4083 | Pershore (Mount Pleasant) - Wyre Piddle | |
| B4084 | Evesham - Wyre Piddle - Martin Hussingtree | B4624/A44/A4538 |
| B4085 | Badsey - Bidford - Alcester | Bidford - Alcester now unclassified |
| B4086 | Stratford-on-Avon - Wellesbourne Mountford - Warmington | |
| B4087 | Wellesbourne Hastings - Junction with A41 at Oakley Wood | |
| B4088 | King's Mead - Wasperton | Unclassified |
| B4089 | Alcester - Wootton Wawen | Southernmost section unclassified |
| B4090 | Alcester - Droitwich | |
| B4091 | Woolmere Green - Stoke Prior - Rock Hill | |
| B4092 | Studley - Astwood Bank Station | |
| B4093 | Studley - Redditch | Unclassified except for southern end |
| B4094 | Link in Redditch | Unclassified |
| B4095 | Warwick - Henley-in-Arden - Junction with B4093 | A4189 |
| B4096 | Tardebigge - Lickey End - Halesowen | Lickey End - Halesowen M5/B4551/A459 |
| B4097 | Warwick (St Nicholas Church Street) | A429 |
| B4098 | Warwick (Priory Road) | A445 |
| B4099 | Leamington Loop | |
| B4100 | Southam - Dunchurch | A426 |
| B4101 | North Redditch - Hockley Heath - Balsall Common - Coventry (Spon End) | Became A4023; now B4101 again |
| B4102 | Wood End - Solihull - Meriden | |
| B4103 | Castle End - Kenilworth Castle - Junction with A446 | |
| B4104 | Link in Kenilworth | |
| B4105 | Link at Balsall joining A446 and B4101 | Became A4023; now B4101 |
| B4106 | Coventry - Allesley | Easternmost section B4101 |
| B4107 | Coventry (Short Street, St Patrick's Road and Queen Victoria Road) | Unclassified; lost within the ring road |
| B4108 | Coventry (Barras Lane, Abbotts Lane and King Street) | Unclassified; King Street now lost under A4053 |
| B4109 | Coventry - Bulkington - Wolvey | |
| B4110 | Willenhall (Warwickshire) - Stoke Green | |
| B4111 | Binley - Monks Kirby - Lutterworth - North Kilworth | B4428/A4303/A4304 |
| B4112 | Rugby - Pailton - Bulkington - Attleborough | |
| B4113 | Bulkington - Bedworth | A4029 |
| B4114 | Nuneaton - Wolvey Heath | |
| B4115 | Chapel End - Atherstone | Became A4131; now B4111 |
| B4116 | Furnace End - Atherstone | Northernmost section unclassified |
| B4117 | Coleshill - Water Orton | |
| B4118 | Castle Bromwich - Curdworth Bridge | |
| B4119 | Wishaw - Tamworth | A4091 |
| B4120 | Alvechurch - Longbridge | |
| B4121 | Birmingham (Bunbury Road) | |
| B4122 | Birmingham (Fordhouse Lane and Vicarage Road) | Western two-thirds A4040 |
| B4123 | Birmingham (Lordswood Road and Harborne Lane) | A4040 |
| B4124 | Birmingham (Perry Wood, Hamstead Road, Icknield Street) - Harborne | Central section A4540 |
| B4125 | Birmingham (Portland Road) - Smethwick (Shireland Road) | |
| B4126 | Birmingham (Islington Row and Highgate Road) | A4540 |
| B4127 | Birmingham (Worcester Street and Bath Row) | Worcester Street unclassified |
| B4128 | Birmingham (Suffolk Street) | Later A4400; now A38 |
| B4129 | Birmingham (Navigation Street, Lower Temple Street) | Unclassified, partly pedestrianised |
| B4130 | Birmingham (Spiccal Street, Jamaica Street and Ravenshurst Street) | Unclassified; western half lost under Bull Ring |
| B4131 | Birmingham (Mariden Street and New Canal Street) | Unclassified |
| B4132 | Birmingham (Albert Street and Vauxhall Road) | Western half unclassified |
| B4133 | Birmingham (Aston Street and Saltley Road (part) ) | Eastern section A47 |
| B4134 | Birmingham (Livery Street) | Unclassified |
| B4135 | Birmingham (Heath Street) - Smethwick (Cranford Street, Soho Street (part) and Rolfe Street) | |
| B4136 | Birmingham (Booth Street) - Smethwick (Waterloo Road, Windmill Lane, Rabone Lane) | Westernmost section A4092 |
| B4137 | Birmingham (Island Road, Oxhill Road, Wellington Road and Aston Lane) | A4040 except for easternmost section |
| B4138 | Perry Barr - Sutton Park | Southernmost section A453 |
| B4139 | Junction with B4138 - Boldmere | A453 |
| B4140 | Birmingham (Witton Road, Woodend Road and Bromford Lane (part) ) | A4040 |
| B4141 | Birmingham (Tyburn) - Curdworth | A38/A4097 |
| B4142 | Birmingham (Summer Road and Gravelly Lane) | |
| B4143 | Birmingham (Bracebridge Street and Sandy Lane) | Mostly A4540; northern end destroyed/unclassified |
| B4144 | Birmingham (Nechells Place - Barr Lane, Lozells Road and Villa Road) | Nechells Place now unclassified |
| B4145 | Birmingham (Baker Street, Muntz Street, Ash Road and Crawford Street) | |
| B4146 | South Yardley - Stechford - Ward End | A4040 |
| B4147 | Stechford - Hodgehill Common | |
| B4148 | Chester Road - Walmley - Moor Hall | |
| B4149 | Sutton Coldfield - Queslett - Greets Green | Easternmost section A453; rest A4041 except at each end |
| B4150 | Queslett - Sutton Park | A4041 |
| B4151 | Walsall - Four Oaks - Junction with A453 | |
| B4152 | Barr Beacon - Aldridge | Unclassified |
| B4153 | Walsall Wood - Brownhills | Northern half B4152 |
| B4154 | Rushall - Hednesford | Northernmost section A460/unclassified |
| B4155 | Wolverhampton - Bloxwich - Muckley Corner | Now mostly A4124. It did not reach Muckley Corner itself, but terminated on A5 to the west. |
| B4156 | Junction with A462 - Cheslyn Hay - Great Wyrley | |
| B4157 | Willenhall (Staffordshire) - Ashmore Lake | Unclassified |
| B4158 | Wolverhampton (Market Street) | Became A459; now unclassified |
| B4159 | Wolverhampton (School Street) | Became A449; now unclassified |
| B4160 | Wolverhampton (Lower Stafford Street) | Now part of A449 |
| B4161 | Penn Fields - Compton - Tettenhall | |
| B4162 | Deepfields - Wolverhampton (Monmore Green) | Now A4126 |
| B4163 | Coseley - Bilston | |
| B4164 | Ocker Hill - Moxley | Now A4098 |
| B4165 | West Bromwich - Walsall | Ends unclassified; rest A4031 |
| B4166 | Oldbury - New Town | |
| B4167 | Hamstead - Newton | |
| B4168 | Smethwick - West Bromwich | Roebuck Lane - unclassified and largely closed to traffic (replaced by parallel A4252) |
| B4169 | Smethwick - Cockshot | |
| B4170 | Langley Green - Oldbury | |
| B4171 | Halesowen - Blackheath - Dudley | Halesowen - Blackheath now A4099 |
| B4172 | Old Hill - Brettell Lane | A4100 except for westernmost section |
| B4173 | Cradley - Netherton | |
| B4174 | Junction with A458 - Quarry Bank | |
| B4175 | Upper Gornal - Wall Heath | |
| B4176 | Dudley - Himley - Hilton | |
| B4177 | Scotts Green - Kingswinford - Ashwood | A4101 |
| B4178 | Kingswinford - Wall Heath | |
| B4179 | Mount Pleasant - Brierley Hill - Tansey Green | Mount Pleasant - Brierley Hill now A4100 |
| B4180 | Harts Hill - Wordsley | |
| B4181 | Link at Dennis Park joining A461 and A449 | A4102 |
| B4182 | Link at Oldbury | |
| B4183 | Halesowen to Short Cross | Unclassified |
| B4184 | Link at Lye | Chapel Street, now unclassified |
| B4185 | Link at Catshill | |
| B4186 | Link at Bromsgrove | A448/B4184 |
| B4187 | Hagley - Hagley Station | |
| B4188 | Bell End - Belbroughton - Blakedown | |
| B4189 | Junction with A451 - Wolverley - Junction with A442 | |
| B4190 | Wribbenhall - Wolverley | |
| B4191 | Link in Kidderminster | Worcester Street - now pedestrianised |
| B4192 | Droitwich - Kidderminster (Summerfield) | Unclassified in Droitwich; rest A442 |
| B4193 | Torton - Stourport | |
| B4194 | Stourport - Bewdley - Kinlet | Stourport - Bewdley now B4195 |
| B4195 | Link in Stourport | A4025 |
| B4196 | Holt Heath - Stourport (Areley Kings) | |
| B4197 | Droitwich - Ombersley - Holt Heath | Unclassified in Droitwich; rest A4133 |
| B4198 | Droitwich (St Andrews Road) | Unclassified |
| B4199 | Buttonbridge - Bradley | |
| B4200 | Bewdley (Fingerpost) - Cleobury Mortimer - Clee Hill - Junction with B4364 | A4117 |
| B4201 | Wyre Common Road | |
| B4202 | Great Witley - Cleobury Mortimer Station | |
| B4203 | Great Witley - Bromyard | |
| B4204 | Worcester - Martley - Tenbury | |
| B4205 | Worcester (Angel Street to Worcester Station) | Westernmost section unclassified |
| B4206 | Worcester (Henwick Road) | |
| B4207 | Worcester - Hereford | B4485/A4103 |
| B4208 | Welland - Great Malvern | |
| B4209 | Hanley Castle - Malvern Wells | |
| B4210 | River Severn - Upton-upon-Severn - Little Malvern | A4104 |
| B4211 | Upton-upon-Severn - Long Green | |
| B4212 | Ryall - Holly Green | Unclassified |
| B4213 | Deerhurst - Staunton | Part near Staunton now B4211 |
| B4214 | Gloucester - Staunton - Ledbury - Bromyard - Tenbury - Cleehill | Gloucester - Ledbury A417/A449 |
| B4215 | Gloucester (Highnam) - Newent - Burley Gate - Hope-under-Dinmore | Preston Cross - Hope A4172/A417 |
| B4216 | Dymock - Ledbury | |
| B4217 | Great Malvertn - Colwall Green - Junction with A48 | Became A4105; now B4218 |
| B4218 | Junction with B4214 - Bosbury - Stony Cross | Became A4154; now B4220 |
| B4219 | Malvern - Storridge | |
| B4220 | Ridgeway Cross - Bromyard | |
| B4221 | Newent - Brampton Abbotts | |
| B4222 | Kilcot - Lea | |
| B4223 | Huntley - Mitcheldean - Staunton - Monmouth | Now A4136 |
| B4224 | Mitcheldean - Lea - Crow - Hill - Hereford | |
| B4225 | Link at Old Gore | |
| B4226 | Westbury-on-Severn - Cinderford | A4151 |
| B4227 | Blakeney - Cinderford - Ruardean - Ross | Blakeney - Cinderford and Nailbridge - River Wye unclassified; Cinderford - Nailbridge A4151; River Wye - Ross B4234 |
| B4228 | Coleford - Welsh Bicknor | Actually ended on the opposite side of the river to Welsh Bicknor. Now unclassified/B4234. |
| B4229 | Branch at Goodrich | |
| B4230 | Whitchurch - St Owen's Cross - Junction with A49 | A4137 |
| B4231 | Lydney - Redbrook | Trow Green - Redbrook unclassified |
| B4232 | Monmouth - St Weonards - King's Thorn | A466 |
| B4233 | Monmouth - Abergavenny | |
| B4234 | Raglan - Llanvihagel-nigh-Usk | Became A40; now bypassed |
| B4235 | Chepstow - Usk | Westernmost section A472 |
| B4236 | Royal Oak - Caerleon - Llanfrechfa - Junction with A4042 | |
| B4237 | Maindee - Newport Docks | Unclassified |
| B4238 | Newport (Dock Street (part), Emlyn Street (part) ) | Became A48; now unclassified |
| B4239 | Newport (Alexandra Road to Transporter Bridge) | Became B4237; now unclassified |
| B4240 | Newport (Stow Park Avenue and part of Waterloo Road) | |
| B4241 | Newport - Nant Coch | Unclassified |
| B4242 | Tredegar Park - Bassaleg | Became A4072; now A467 |
| B4243 | Pye Corner - Rogerstone - Junction with A467 | Became A4072; now unclassified/A467 |
| B4244 | Llantarnam - Pontnewydd - Pontypool | Became A4051; now bypassed |
| B4245 | Little Mill - Abergavenny | Became A4125; now A4042 |
| B4246 | Branch to Abersychan | |
| B4247 | Blaenavon - Govilon | B4246 |
| B4248 | Blaenavon - Brynmawr | |
| B4249 | Loop at Abertillery | Unclassified |
| B4250 | Abercarn - Newbridge | Unclassified |
| B4251 | Crosskeys - Wattsville - Pont-llan-fraith | Easternmost section unclassified |
| B4252 | Maes-y-cwmmer - Pengam | |
| B4253 | Blackwood - Pengam | Unclassified |
| B4254 | Pengam - Gelligaer - Llancaiach | |
| B4255 | Nelson - Treharris - Edwardsville | Trelewis - Edwardsville B4254 |
| B4256 | Tredegar - Rhymney | |
| B4257 | Rhymney - Rhymney Bridge Station | Northern half A469 |
| B4258 | Cardiff (Roath) - Birchgove | A469 |
| B4259 | Loop in Cardiff | A4119 |
| B4260 | Llandough - Penarth | A4160 |
| B4261 | Llandaff - Llantrisant | Now A4119; northernmost section unclassified |
| B4262 | Radyr Court - Tongwynlais - Taffswell | |
| B4263 | Caerphilly - Senghenydd | |
| B4264 | Beddau - Pen-yr-hoel | B4263 |
| B4265 | Saintwell - Wenvoe - Llantwit Major | Saintwell - Burton A4050/A4226/lost under airport runway |
| B4266 | Junction with B4265 - Barry | Southernmost section unclassified |
| B4267 | Llantwit Major - Cowbridge | B4270; southernmost section unclassified |
| B4268 | Nash Manor - Pentree Meyrick | |
| B4269 | Llantwit Major - Bridgend | B4265; easternmost section unclassified |
| B4270 | Cowbridge -- Llantrisant (Talbot Road) | A4222 |
| B4271 | Llantrisant (Talbot Road) - Tonyrefail - Tonypandy - Ystrad Rhondda | Became A4119; now heavily bypassed |
| B4272 | Link at Glyntaff | B4595 |
| B4273 | Pontypridd - Ynys-y-bwl | |
| B4274 | Pontypridd - Pont Shon Norton | A4223/unclassified |
| B4275 | Abercynon - Penrhiwceiber - Mountain Ash | |
| B4276 | Trecynon - Dynevor Arms | |
| B4277 | Porth - Wattstown - Maerdy | A4233 |
| B4278 | Porth - Penygraig | A4058 except for westernmost section |
| B4279 | Tonyrefail - Blackmill | Now B4278/A4093 |
| B4280 | Pencoed - Bryncethin | Easternmost section unclassified |
| B4281 | Aberkenfig - Pyle | |
| B4282 | Lelston - Porthcawl | A4106 |
| B4283 | Porthcawl - Pyle | A4229 |
| B4284 | Cymmer - Abergwynfi | Dead end at Abergwynfi. Upgraded to A4107 when Bwlch-y-Clawdd road built in 1930s. |
| B4285 | Cymmer - Glyncorrwg | Became A4108. Now unclassified. |
| B4286 | Port Talbot Docks - Aberavon - Cwmavon - Pontrhydyfen | Docks - Aberavon unclassified |
| B4287 | Pontrhydyfen - Neath | |
| B4288 | Neath - Aberdulais | Neath - Tonna B4434; Tonna - Aberdulais destroyed |
| B4289 | Link in Neath | B4434 |
| B4290 | Neath Abbey Station - Swansea | West of Crymlin Burrows now A483/A4067 |
| B4291 | Clydach - Birchgrove - Lonlas | |
| B4292 | Llansamlet - Swansea Docks | Became A4217; central section now B5444 |
| B4293 | Link in Swansea | A4067 |
| B4294 | Swansea - Port Eynon | A4118 |
| B4295 | Swansea - Gowerton - Penclawdd | Started in Cockett and never reached Swansea |
| B4296 | Gowerton - Pontardulais | |
| B4297 | Ystalyfera - Ystradgynlais - Senny Bridge | Unclassified/B4599/A4067 |
| B4298 | Ystalyfera - Gurnos | A4067/B4599 |
| B4299 | Gurnos - Brynamman | A4068 |
| B4300 | Gwaun-Cae-Gurwen - Llangadock | A4069 |
| B4301 | Ammanford - Pontardulais | A483/B4297 |
| B4302 | Pontardulais - Llanelly | A4138/B4297 |
| B4303 | Junction with B4302 - Dafen - Felin-foel | |
| B4304 | Llanelly (Park Street, Stepney Street, Station Road and New Dock Road) | Park Street & Stepney Street pedestrianised |
| B4305 | Llanelly (James Street, Stepney Place and Murray Street) | James Street unclassified; rest A4214/lost under supermarket |
| B4306 | Llanelly (Market Street) | Unclassified/pedestrianised/lost under shopping centre |
| B4307 | Llanelly (Vaughan Street) | Pedestrianised |
| B4308 | Llanelly (Furnace) - Kidwelly | |
| B4309 | Llanelly - Pont Yates - Carmarthen | Always ended at Cwmffrwd and never reached Carmarthen |
| B4310 | Tumble - Dre-Fâch | |
| B4311 | Junction with A48 - Burry Port - Pembrey | Easternmost section unclassified |
| B4312 | Carmarthen (John's Town) - Llanstephan | |
| B4313 | St. Clears - Laugharne | A4066 |
| B4314 | St. Clears - Whitland - Robeston Wathen | A40 |
| B4315 | Templeton - Cross Hands | A4115 |
| B4316 | Kilgetty - Saundersfood - New Hedges | |
| B4317 | Loop at Tenby | A478/unclassified |
| B4318 | Tenby - Sageston | |
| B4319 | Tenby - Pembroke | A4139 |
| B4320 | Milton - Pembroke - Angle | Milton - Pembroke A4075; largely unclassified at Angle |
| B4321 | Pembroke - Waterloo | A4139 |
| B4322 | Bush - Pembroke Dock | |
| B4323 | Waterloo - Pembroke - Dockyard | B4322/unclassified |
| B4324 | Neyland - Johnston | B4325/A477 |
| B4325 | Junction with B4324 - Steynton | Unclassified |
| B4326 | Link at Milford Haven | |
| B4327 | Haverfordwest - Dale | |
| B4328 | Haverfordwest - St. David's | Now A487 |
| B4329 | Eglwyswrw - Haverfordwest | |
| B4330 | Fishguard (Scleddau) - St. David's | Unclassified/A487 |
| B4331 | Mathry - Goodwick | Now A487 |
| B4332 | Blaen-ffos - Boncath - Cenartht | |
| B4333 | Newcastle Emlyn - Tan-y-groes | |
| B4334 | Henllan - Llain | |
| B4335 | Henllan - Pentre-cwrt | |
| B4336 | Llandyssul - Llanfihangel - Junction with A485 | Westernmost section B4624 |
| B4337 | Llanybyther - Temple Bar | |
| B4338 | Synod - New Quay | A486 |
| B4339 | New Quay - Llanarth - Llanfihangel Ystrad | B4342 |
| B4340 | Lampeter - Aberayron | A482 |
| B4341 | Bryn-goleu - Llanrhystyd | B4337 |
| B4342 | Llanfihangel Ystrad - Tregaron | |
| B4343 | Tregaron - Devil's Bridge | |
| B4344 | Ponterwyd - Devil's Bridge - Aberystwyth | A4120 |
| B4345 | Loop in Aberystwyth | A487 |
| B4346 | Aberystwyth (Branch to Pier) | |
| B4347 | Pontrilas - Vowchurch | |
| B4348 | Llandinabo - Vowchurch | Continued on to Hay as it does now |
| B4349 | Belmont Minster - Clehonger - Coldwell | |
| B4350 | Whitney - Clyro - Glasbury | A438 |
| B4351 | Hay - Clyro | |
| B4352 | Hereford (White Cross) - Mortimer's Cross - Walford | A4110/B4530 |
| B4353 | Willersley - Kington | A4111 |
| B4354 | Leominster (Baron's Cross) - Parton | A44/A4112 |
| B4355 | Kington - Presteigne | |
| B4356 | Presteigne - Walton | B4362 |
| B4357 | Walton - Whitton - Rhos-y-merich | |
| B4358 | Newbridge-on-Wye - Llanyre | |
| B4359 | Presteigne - Knighton | B4355/A4113 |
| B4360 | Cholstrey - Kingsland - Junction with B4352 | |
| B4361 | Leominster - Orleton - Ludlow | |
| B4362 | Woofferton - Mortimer's Cross - Presteigne - Monaughty | Presteigne - Monaughty B4356 |
| B4363 | Cleobury Mortimer - Bridgnorth | |
| B4364 | Ludlow - Bridgnorth | Westernmost section unclassified/A4117 |
| B4365 | Bromfield - Pedlars rest | |
| B4366 | Bromfield - Knighton | A4113 |
| B4367 | Brampton Bryan - Long Medowend | |
| B4368 | Clun - Craven Arms - Much Wenlock | Shipton - Much Wenlock B4378 |
| B4369 | Broome - Aston-on-Clun | |
| B4370 | Horderley - Marshbrook | |
| B4371 | Church Stretton - Much Wenlock | |
| B4372 | Shipton - Morville | B4368 |
| B4373 | Bridgnorth - Borseley - Benthall | Northernmost section B4375 |
| B4374 | Link in Bridgnorth | B4364 |
| B4375 | Link at Broseley | |
| B4376 | Much Wenlock - Broseley (The Dunge) | |
| B4377 | Broseley (The Dunge) - Ironbridge | B4373; northernmost section unclassified |
| B4378 | Much Wenlock - Buildwas | A4169 |
| B4379 | Sutton Maddock - Shifnal - Woodcote | Halesfield - Shifnal A4169 |
| B4380 | Kemberton - Ironbridge - Buildwas - Atcham | Kemberton - Buildwas now A4169/B4373/unclassified |
| B4381 | Coalbrookdale - Lawley | Partly A5223; mostly unclassified |
| B4382 | Coalmoor - Dawley | Unclassified |
| B4383 | Lydham Heath - Junction with A488 | |
| B4384 | Link at Bishop's Castle | |
| B4385 | Colebatch - Bishop's Castle - Montgomery - Garthmyl | |
| B4386 | Shrewsbury - Westbury - Chirbury - Montgomery | |
| B4387 | Minsterley - Westbury - Wattlesborough Heath | |
| B4388 | Montgomery - Forden - Kingswood | |
| B4389 | Aberbechan - Llanfair Caereinion | |
| B4390 | Branch at Welshpool | B4381 |
| B4391 | Welshpool - Llanfyllin - Bala - Ffestiniog - Maentwrog | Welshpool - Llanfyllin A490; Bala - Pont Rhyd-y-fen A4212; Pont Tal-y-bont - Maentwrog A496 |
| B4392 | Junction with B4391 - Guilsfield - Arddleen | |
| B4393 | Ford - Alberbury - Llandrinio - Llansantffraid-ym-Mechain | |
| B4394 | Llanfair Caereinion - Llansantffraid-ym-Mechain | B4389/A495 |
| B4395 | Llanfyllin - Llangadfan | Eastern section B4393 |
| B4396 | Wolfshead - Knockin - Llangedwyn - Penybont-fawr | Llynclys - Porth-y-Waen A495 |
| B4397 | Loppington - Baschurch - Knockin | |
| B4398 | Knockin - Llanymynech - Junction with B4393 | |
| B4399 | Llanyblodwel Station - Llansantffraid - Bryngwyn | A495/B4393 |
| B4400 | Link in Oswestry | Part of B5069 one-way system |
| B4401 | Corwen - Llandrilllo - Llanfor | |
| B4402 | Llandderfel - Junction with B4391 | |
| B4403 | Llanuwchllyn - Llangower - Bala Junction | |
| B4404 | Cemmaes Road - Ffridd Gate Station | |
| B4405 | Bryn-crug - Abergynolwyn - Junction with A487 | |
| B4406 | Penmachno - Junction with A5 | |
| B4407 | Ffestiniog - Blaenau Ffestiniog - Bettws-y-Coed - Conway | Now A470 and B5106 |
| B4408 | Pont-tal-y-bont - Rhiwbryfdir | A496/unclassified |
| B4409 | Junction with B4408 - Manod Station | Unclassified |
| B4410 | Tremadoc - Llanllynfni - Llanwnda | A487 |
| B4411 | Criccieth - Glan-Dwyfach | |
| B4412 | Pwllheli - Morfa Nevin | All but northernmost section now A497 |
| B4413 | Pont-y-Gareg-fechan - Aberdaron | Eastern section A499 |
| B4414 | Llanbedrog - Aber-Soch | A499 |
| B4415 | Efail-newydd - Nanhoron | |
| B4416 | Cedio - Nevin | A497 |
| B4417 | Nevin - Four Crosses | |
| B4418 | Penygroes - Nantille | Eastern half largely destroyed by quarry workings |
| B4419 | Carnarvon - Llangaffo - Pentre-berw | Crossed to Anglesey via a now-discontinued ferry |
| B4420 | Newborough - Llanfair PG - Junction with B5108 | Now A4080 |
| B4421 | Newborough - Llangaffo | |
| B4422 | Cefn Cwmmwd - Llanfaelog | Southern section declassified when A4080 took route to the south |
| B4423 | Llanfaelog - Trefor | Now A4080 and B5112 |
| B4424 | Link in Carmarthen | A last minute addition - the other B442xs are on Anglesey. Presumably now unclassified. |