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List of A roads in zone 4 in Great Britain starting north of the A4 and south/west of the A5 (roads beginning with 4).

Single- and double-digit roads

Road	From	To	Notes
A4	City of London (Holborn Circus)	Avonmouth	Originally London to Bath
A40	City of London (near St. Paul's Cathedral)	Fishguard	The longest A road in Zone 4 at 256 miles long
A41	Central London (near Marble Arch)	Birkenhead	A large section of the former A41, from Bicester to Solihull, was downgraded when the northern extension of the M40 motorway was opened, as was a section in Birmingham due to other road improvements; most of it is now the non-contiguous B4100. A41 rerouted along new dual carriageway, Black Country New Road, between West Bromwich and Wednesbury. Old route through Hill Top renumbered A4196.
A42	Kegworth	Appleby Magna	A continuation of the M42, hence the use of A42 despite being entirely in Zone 5. Previously allocated to a road from Reading to Birmingham; this became part of the A329, the A423 (this section now the A4074 and A4158), and the A34 (section from Oxford to the M42 is now the A4144, A44, A3400).
A43	M40 motorway Junction 10 north of Bicester	Stamford	Formerly continued along present route of B430.
A44	Oxford	Aberystwyth	Officially the most dangerous road in Wales between Aberystwyth and Llangurig.[1] Route between Evesham and A422 originally designated A4538.
A45	Birmingham	Thrapston	Previously continued along route of current A14 to Felixstowe
A46	Bath	Cleethorpes	The section from Cheltenham to Heath End (North of Stratford on Avon) was mostly reclassified as B4632 and much of what was previously the A435 from Cheltenham to Bidford was renamed the A46. A piece of A438 from M5 J9 to Teddington also became part of the A46.
A47	Birmingham	Lowestoft	The original section between Birmingham and Nuneaton has mostly been now de-classified to B-roads, while the section between Nuneaton and Leicester via Hinckley has been largely de-trunked since the M69 runs a similar route. A12 from Great Yarmouth to Lowestoft redesignated as A47 in 2017.
A48	Highnam near Gloucester	Carmarthen	Originally began in Worcester. Worcester to Newport is now A449.
A49	Ross-on-Wye	Bamber Bridge

Triple-digit roads

Only roads that have individual articles have been linked in the "Road" column below.

Zdroj:https://en.wikipedia.org?pojem=A4051_road
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Road	From	To	Notes
A400	Central London (Trafalgar Square)	Archway	Takes the route of the Northern line, Charing Cross Branch and High Barnet Branch
A401	Central London (Piccadilly Circus)	Angel
A402	Central London (Marble Arch)	Stamford Brook, Chiswick
A403	M48 motorway, J1 near Aust	Avonmouth	A road of the same number ran down Western Avenue, London until 1946 when the A40 was diverted along the route.
A404	Central London (Edgware Road station)	A404(M) Junction 9B near Maidenhead	The London section is called Harrow Road for most of its length. Originally ran through Pinner, but now by-passes it using parts of the old A410 and A4090 and the old route through Pinner has now been declassified
A405	Leavesden Green	Near Park Street
A406	Gunnersbury	Beckton	The North Circular Road
A407	Harlesden	Child's Hill	Through Willesden including the High Road and Cricklewood
A408	Heathrow Airport	Uxbridge	The southern section in Sipson due to be demolished to make way for Heathrow Airport 3rd runway
A409	Northwick Park Hospital	Bushey	through the middle of Wealdstone and the western part of Stanmore known as Stanmore Common
A410	Pinner	Edgware	Uxbridge Road, through Stanmore Broadway, then London Road and Spur Road meeting the A41. Original western section now part of A404
A411	Watford	Barnet	Meets the A41 twice between which it goes through the centre of Watford, Bushey Arches and Bushey Heath, then through the northern part of Elstree, across Stirling Corner through Arkley and into Barnet
A412	Slough	Garston
A413	Gerrards Cross	Towcester
A414	Near Hemel Hempstead	Maldon	Section from Hemel Hempstead to the Park Street Roundabout was the M10 before 2009.
A415	Berinsfield	Witney
A416	Amersham	Berkhamsted
A417	Streatley	Leominster
A418	M40 motorway J8a	Ascott, Buckinghamshire
A419	Whitminster	Swindon
A420	Bristol	Oxford
A421	Croughton	Wyboston	Forms the H8 Standing Way in Milton Keynes.
A422	Bedford	Worcester	Concurrent with the A46 between Stratford-upon-Avon and Alcester. Forms the H3 Monks Way in Milton Keynes.
A423	Hinksey Hill	Coventry	Formerly ran from Maidenhead to Tamworth via Oxford and Banbury and Coventry, and a small section of this remains as part of the Oxford Ring Road. Now begins its former route at Banbury. Section beyond Coventry now B4098 and A51.
A424	Burford	A44 near Bourton-on-the-Hill
A425	Daventry	Warwick	Route between the junctions with the A452 and the A46 previously part of A41.
A426	Leicester	Southam
A427	Market Harborough	Oundle
A428	Coventry	Cambridge	This road is now split in two parts between Great Barford and Eaton Socon due to the extension of the A421 to the A1.
A429	Chippenham	Coventry
A430	Quedgeley	Longford, Gloucester	Canal in Gloucester realigned in 2006 as part of A430 Western Relief Road construction.
A431	Bristol	Bath
A432	Bristol	Old Sodbury
A433	A46 at Dunkirk	A429 SW of Cirencester
A434	Unused		Used to run from the A429 near Malmesbury to the A38 near Hardwicke, south of Gloucester. Malmesbury–Nailsworth section now B4014; section north of Stroud became part of A419, now part of B4008.
A435	Birmingham	Cirencester	Concurrent with the A46 between Alcester and Teddington Hands
A436	A417 near Brockworth	A44 near Salford, Oxfordshire
A437	Harlington, London	A40 Western Avenue near Ickenham	Originally Gloucester to Newport, now A48.
A438	M5 motorway Junction 9	A470 near Llanfilo
A439	Stratford-upon-Avon	A46 4 miles SW of Warwick
A440	Reserved		Reserved for Bristol Road. Used to run from Pershore to Great Malvern (now B4211 and A4104). Crossed River Severn on swingbridge (demolished 1940) in Upton-upon-Severn.
A441	Birmingham	Cookhill	Previously continued along present alignment of B4088.
A442	Droitwich	Whitchurch
A443	Worcester	Newnham Bridge
A444	Coventry	Burton upon Trent	Short gap in Coventry due to incomplete construction of Phoenix Way.
A445	Warwick	A45 at Ryton-on-Dunsmore
A446	Little Packington	Roughley
A447	Hinckley	Coalville	The original route through Hinckley was by-passed by a new road completed in the early 1990s
A448	Kidderminster	Studley, Warwickshire	The original route between Bromsgrove and Redditch was by-passed by a dual carriageway in the 1970s after Redditch was developed into a new town
A449	Newport	Stafford	Used to continue beyond M4. Route to M5 motorway previously A4538.
A450	Torton	West Hagley	Originally continued along present alignment of B4187.
A451	Stourbridge	Great Witley
A452	Leamington Spa	Brownhills	Known as Chester Road for most of route between A5 and M42. Link road between A425 and M40 J14 previously A41.
A453	Nottingham	Birmingham (Perry Barr)	Concurrent with A5127 (former A38) in Sutton Coldfield. Part of old route reinstated as A453 to serve East Midlands Airport.
A454	Bridgnorth	Four Oaks	The section through Willenhall was renumbered in the 1970s following the completion of The Keyway by-passing the south of the town, and further reumbering took place in 1995 on the completion of the Black Country Route. Used to continue direct to Bridgnorth town centre. Rerouted along new alignment to meet A458 near Stanmore when bypass opened.
A455	Unused		Used to run from M4 junction 24 in Ringland, Newport to George Street Bridge. Now part of the A48 Southern Distributor Road and rest is now Corporation Road. The original A455 ran from Birmingham to Stafford until 1935 when it became part of an extension to the A34.
A456	Birmingham	Woofferton	The section through Halesowen was renumbered to B4183 and A458 when the by-pass opened in the 1960s. Originally started on A41 in city centre, it later started on the Inner Ring Road but now starts on the Middle Ring Road (A4540).
A457	Birmingham	Sedgley	The original route through Smethwick town centre was renumbered when a by-pass opened in about 1970. Also used to pass through Oldbury town centre. Has two branches in Sedgley: Tipton Road and Gate Street.
A458	Mallwyd	Quinton	Originally started in Cross Foxes Inn. Further renumberings have taken place over the years, notably when the town of Bridgnorth was by-passed in 1985, and when the western section became part of the A470. Section between Halesowen and Quinton previously A456.
A459	Halesowen	Wolverhampton	Renumbering took place when Dudley town centre was by-passed by a new route of the A461 in 1999. The road continued south of Halesowen towards Bromsgrove until the 1970s. Also used to meet Ring Road in Wolverhampton but now terminates at A4123, Grove Street. Until the 1960s ran down Dudley Street in Wolverhampton. After this road was pedestrianised, followed route of B4158, B4160 and part of A460 via Garrick Street, Market Street, Princess Street and Stafford Street to Five Ways. However Stafford Street was taken over by the A449 when old A449, Waterloo Road, declassified in 1980s.
A460	Wolverhampton	Rugeley	The section through the centre of Cannock was renumbered A4601 in 1989 when the town's by-pass opened. Currently only link to M6 North from M54 Junction 1. Originally terminated in Princes Square in Wolverhampton.
A461	Lichfield	Wollaston, West Midlands	Concurrent with the A41 between Wednesbury & Great Bridge. Previously passed through Brierley Hill town centre. Old route through Dudley town centre renumbered or declassified when bypass opened in 1999. In 2008, the bypass was named Duncan Edwards Way.
A462	Essington	Wednesbury	The section through Darlaston town centre became unclassified when a new by-pass opened in the late 1960s
A463	Wombourne	Willenhall	The section beyond Coseley was either renumbered or became unclassified when the Black Country Route was completed between 1986 and 1995. Part of former route in Bilston replaced by A4039 and B4484. Concurrent with A454 between The Keyway and Armstrong Way.
A464	Oaken	Hollinswood	Primary route between Wolverhampton and Telford for non-motorway vehicles via Albrighton and Shifnal
A465	Bromyard	M4 motorway Junction 45, Llandarcy
A466	King's Thorn	Chepstow
A467	Duffryn, Newport	A465, Brynmawr
A468	Bassaleg, Newport	A470, Nantgarw
A469	A4161, Roath, Cardiff	A465, Rhymney
A470	Cardiff	Llandudno	Original north end was at Brecon. Later extended north.
A471	Unused		Ran from Abergavenny to Usk. In 1935 the section from Abergavenny to Llanvihangel Gobion became part of a rerouted A40 and the remainder was downgraded to the B4598 in the 1970s.
A472	Treharris	Usk
A473	Pontypridd	Bridgend	Originally started at Treforest but following the completion of the Church Village bypass it now starts at Upper Boat and the section between Treforest and Gwaun Meisgyn is now downgraded to the B4595.
A474	Briton Ferry	Ammanford
A475