| County Borough or large burgh and name of trunk road. | General description of route. | Ministry of War Transport classification number. |
| County Borough of Blackburn. | | |
| Leeds—Halifax—Burnley—Blackburn—East of Preston. | Borough boundary (east) - Whitebirk Road (Junction with A 6119). | A 679 |
| Accrington Road (Junction with A 679) -Borough boundary (North of Leeds -Liverpool Canal). | A 6119 |
| Borough boundary (South of L.M.S. Railway, Great Harwood Loop) - Borough boundary (West of Beard wood). | A 6119 |
| County Borough of Bolton. | | |
| London—Carlisle—Glasgow—Inverness. | Borough boundary (North-west of Green-heys) - Borough boundary at Hulton Lane Ends. | A6 |
| County Borough of Bootle. | | |
| Bootle—North of Aintree. | Dunnings Bridge Road—Borough boundary (West of Boundary Road) - Borough boundary (East of Boundary Road). | A 567 |
| County Borough of Bradford. | | |
| Leeds—Halifax—Burnley—Blackburn—East of Preston. | City boundary (South of Wyke) - City boundary (West of Lower Wyke). | A 58 |
| County Borough of Burnley. | | |
| Leeds—Halifax—Burnley—Blackburn—East of Preston. | Borough boundary (South of Healey Heights) - Accrington Road (Junction with A 679). | A 646 |
| Rosendale Road (Junction with A 646) -Borough boundary (East of Hapten). | A 679 |
| City of Coventry. | | |
| London—Holyhead. | City boundary at Willenhall - City boundary (West of Allesley). | A 45 |
| Bath—Cheltenham—Evesham—Coventry—Leicester—Lincoln. | City boundary at Gibbet Hill - Burnt Post (Junction with A 45). | A 46 |
| County Borough of Derby. | | |
| London—Carlisle—Glasgow—Inverness. | Borough boundary (South-east of Alvaston) -Parley Abbey (Junction with A 6). | A5111 |
| Darley Abbey (Junction with A 5111) -Borough boundary at Darley Abbey. | A6 |
| Exeter—Leeds. | Borough boundary at Littleover - Warwick Avenue (Junction with A 5111). | A 38 |
| Nottingham—Derby—Stoke-on-Trent. | Borough boundary (South of Spondon Park) -Borough boundary (North-east of Alvaston). | A5111 |
| Manor Road (Junction with A 5111)-Borough boundary (North-east of Mickle-over). | A 516 |
| Derby—Macclesfield—South of Stockport. | Markeaton Park (Junction with A 5111)-Borough boundary (at Mack worth). | A 52 |
| County Borough of Dudley. | | |
| East of Birmingham—Birkenhead. | All those sections within the borough | A 4123 |
| County Borough of East Ham. | | |
| London—Tilbury. | Borough boundary (west) - Borough boundary (east). | A 13 |
| City of Gloucester. | | |
| London—Fishguard. | City boundary (east) - City boundary (west) (excluding spur to A 417) | A 40 |
| Hungerford—Gloucester—Ross—Hereford. | City boundary (east) - Cole Bridge (Junction with A 40) (excluding Barnwood Road spur to A 40). | A 417 |
| County Borough of Ipswich. | | |
| London—Great Yarmouth. | Borough boundary (south-west) - Borough boundary (east). | A 12 |
| Ipswich—Newmarket—Cambridge-St. Neots—Bedford—Northampton—Weedon. | Chevallier Street (Junction with A 12) -County borough boundary at Whitton. | A 45 |
| City of Leeds. | | |
| Liverpool—Preston—Leeds. | City boundary (north) - Ring Road at Weetwood Grange (Junction with A 6120). | A 660 |
| Liverpool—Leeds—Hull. | Whitkirk Lane End (Junction with A 6120) -City boundary (East of Swillington Mill). | A 63 |
| Leeds Ring Road. | Weetwood Grange (Junction with A 660) -Mill Green (Junction with A 64). | A 6120 |
| South of Seacroft (Junction with A 64) -Whitkirk Lane End (Junction with A 63). | A 6120 |
| Leeds—York—Scarborough. | South of Seacroft (Junction with A 6120) -City boundary at Mill Green. | A 64 |
| Leeds—Wetherby. | Ring Road (Junction with A 6120) - City boundary (South of Red Hall). | A 58 |
| City of Liverpool. | | |
| Liverpool—Leeds—Hull. | Queens Drive (Junction with A 5058) -Walton Hall Avenue - City boundary at Croxteth Brook. | A 580 |
| City of Norwich. | | |
| London—Norwich. | City boundary at Cringleford Bridge - Mile End Road (Junction with A 1074). | A 11 |
| Birmingham—Great Yarmouth. | City boundary (West) - Woodlands (Junction with A 1074). | A 47 |
| Woodlands (Junction with A. 47) - Trowse Millgate (Junction with A 146). | A 1074 |
| Trowse Millgate (Junction with A 1074) -Carrow Bridge (Junction with A 1074). | A 146 |
| Carrow Bridge (Junction with A 146) - East of Cotman Road (Junction with A.47). | A 1074 |
| East of .Cotman Road (Junction with A 1074) - City boundary (east). | A 47 |
| City of Nottingham. | | |
| North-East of Birmingham—Nottingham. | City boundary (North-east of Beeston) -Clifton Boulevard (Junction with A 614). | A 453 |
| Nottingham—Derby—Stoke-on-Trent. | Clifton Boulevard (Junction with A 614) -City boundary at Tottlebrook Bridge. | A52 |
| Nottingham Ring Road. | Beeston Road (Junction with A 453) - Radford Bridge (Junction with A 609). | A 614 |
| Radford Bridge (Western junction with A 614) - Radford Bridge (Eastern junction with A 614). | A 609 |
| Radford Bridge (Junction with A 609) -City boundary (Junction with A 60). | A 614 |
| City of Oxford. | | |
| London—Fishguard. | City boundary .(East of Headington) - City boundary (North-west of Headington). | A 40 |
| City boundary (West of River Cherwell) - City boundary (North of Wolvercot). | A 40 |
| Winchester—Preston. | Upper Wolvercot (Junction with A 40) -City boundary (north). | A 34 |
| Oxford—Northampton—Stamford—Market Deeping. | South of Wolvercot Cemetery (Junction with A 40) - City boundary (north). | A 433 |
| County Borough of St. Helens. | | |
| Liverpool—Leeds—Hull. | Borough boundary (South-east of Moss Bank Station) - Borough boundary (East of Carr Mill Viaduct). | A 580 |
| City of Stoke-on-Trent. | | |
| Winchester—Preston. | City boundary (at Strongford Bridge) - City boundary (at Newcastle-under-Lyme). | A 34 |
| County Borough of West Ham. | | |
| London—Tilbury. | Prince Regents Lane (Junction with A 112) -Borough Boundary (east). | A 13 |
| Burgh of Dunfermline. | | |
| Dennyloanhead—Kincardine—Kirkcaldy—St. Andrews. | City boundary (west) at Peattiesmuir - City boundary (east) at Rosyth. | A 906 |
| City of Dundee. | | |
| Perth—Aberdeen—Inverness. | City boundary (west) - Strips of Craigie (Junction with A 92). | A 972 |
| Strips of Craigie (Junction with A 972) - City boundary (east). | A 92 |
| Burgh of Clydebank. | | |
| London—Carlisle—Glasgow—Inverness. | Burgh boundary (east) - Burgh boundary (west). | A 82 |
| Burgh of Dumbarton. | | |
| London—Carlisle—Glasgow—Inverness. | Burgh boundary (south-east) - Burgh boundary (north) | A 82 |