| LONDON-EDINBURGH—THURSO | London—Junction with A.555 (Barnet By-pass). | A. 1 |
| Junction with A.1 (Great North Road)—Junction with A.406 (North Circular Road). | A. 555 |
| Junctions with A.555 East and West of Regent's Park Road. | A. 406 |
| West of Regent's Park Road—South of Page Street. | A. 555 |
| South of Page Street—Apex Comer. | A. 500 |
| Apex Corner—South Mimms—North of Hatfield. | A. 555 |
| North of Hatfield—Welwyn By-pass—Baldock—Biggleswade—Alconbury—Norman Cross—Wansford By-pass -=-Stamford—Colsterworth By-pass—Grantham—Foston By-pass—Newark-upon-Trent—Carlton-on-Trent By-pass—East Retford—Doncaster—Ferrybridge By-pass—Aberford—Wetherby—Boroughbrldge—Scotch Corner—Darlington—Ayclifie By-pass—Ferryhill By-pass—Neville's Cross—Chester-le-Street By-pass—Gateshead—Newcastle-upon-Tyne—Morpeth—Alnwick—Belford—Berwick-upon-Tweed—Ayton—Grant-house—Cockburnspath—Dunglass By-pass—Broxburn—Parkend—East Linton By-pass—Haddington By-pass—Tranent—Musselburgh— Edinburgh. | A. 1 |
| Edinburgh—Kirkliston—Linlithgow— Polmont—Falkirk—Larbert—Bannockburn —Stirling—Bridge of Allan—Dunblane— Greenloaning—Blackford—Auchterarder—Perth—Dunkeld—Ballinluig—Pitlochry—Blair Atholl—Dalwhinnie—Newtonmore—Kingussie—Aviemore—Carrbridgo—Tomatin—Inverness—Beauly—Dingwall—Evanton —Invergorden—Tain—Kincardine—Bonar Bridge—Golspie—Brora —Helmsdale—Dunbcath—Latheron—Wick. | A. 9 |
| Wick—Watten—Thurso. (Scrabster Pier.) | A. 882 |
| LONDON-NORWICH | London—Woodford—Epping—Bishop's Stortford Station—Great Chesterford—Newmarket—Barton Mills—Thetford—Attleborough—Wymondham—Norwich. | A. 11 |
| LONDON-GREAT YARMOUTH | London—Romford—Brentwood—Ingatestone— Chelmsford By-pass—Witham—Colchester By-pass—Stratford St. Mary —Lattinford (The Green) By-pass—Washbrook By-pass—Ipswich—Kesgrave—Martlesham—Woodbridge By-pass—Wickham Market—Saxmundham—Blythburgh—Wangford—Kessingland—Lowestoft—Hopton—Great Yarmouth. | A. 12 |
| LONDON—FOLKESTONE—DOVER— | London—Eltham By-pass—Sidcup By-pass—Farningham By-pass—Wrotham By-pass—Leyboume—Maidstone—Harrietsham By-pass—Lenham By-pass—Charing By-pass—Ashford—Wiliesborough By-pass—New Inn Green—Newington—Cheriton—Folkestone. | A. 20 |
| Folkestone—Dover Hill—Capel By-pass—Little Farthingloe—Dover. | A. 259 |
| Dover—Dover (Town Station) | A. 2 |
| LONDON-BRIGHTON | London—Croydon By-pass—Coulsdon—Redhill—Horley—Crawley—Handcross—Bolney Common—Pyecombe—Brighton. | A. 23 |
| LONDON-PORTSMOUTH | London—Kingston By-pass—Ripley—Guildford and Godalming By-pass—Hindhead—Liphook—Petersfield—Portsmouth. | A. 3 |
| South-West of BASINGSTOKE—SOUTHAMPTON | Dummer Down—(Junction with A. 30)—Popham—Winchester. | A. 33 |
| Winchester | A. 31 |
| Winchester—Chandler's Ford—Southampton. | A. 36 |
| LONDON—PENZANCE | London—Hounslow Heath | A. 4 |
| Hounslow Heath—Staines—Egham By-pass—Bagshot By-pass—Hartley Row—Basingstoke By-pass—Dummer Down—Stockbridge—Lopcombe Corner—Salisbury—Wilton—Shaftesbury—Sherborne—Yeovil—Crewkerne—Chard—Yarcombe—Honiton—Exeter. | A. 30 |
| Exeter—Kennford By-pass—Chudleigh—Ashburton By-pass—Buckfastleigh By-pass—Ivy bridge—Plymouth—Torpoint—Liskeard—Bodm in. | A. 38 |
| Bodmin—Fraddon —Zelah—Redruth—Hayle —Penzance (Market Jew Street). | A. 30 |
| LONDON—BRISTOL | London—Great West Road—Colnbrook By-pass—Slough—Maidenhead—Twyford By-pass—Sonning By-pass—Reading—Newbury—Hungerford—Marlborough—Calne—Chippenham—Box—Bath—Keynsham—Bristol. | A. 4 |
| LONDON—FISHGUARD | London—Ealing—Uxbridge—Beaconsfield—High Wycombe—Tetsworth—Oxford Northern By-pass—Witney—South of Burford—Northleach—Andoversford—Cheltenham—Longleavens By-pass—Gloucester—Junction with A.48. | A. 40 |
| Junction with A.40—Westbury-on-Severn—Blakeney—Chepstow—Caerwent By-pass—Penhbw By-pass—Llanbeder By-pass—Newport—St. Mellons—Cardiff—Cowbridge—Bridgend By-pass—Port Talbot—Neath—Swansea —Penllergaer—Pontardulais—Llanddarog By-pass—Carmarthen. | A. 48 |
| Carmarthen—St. Clears—Whitland—Haverfordwest—Wolf's Castle—Fishguard Harbour. | A. 40 |
| LONDON—HOLYHEAD | London—Edgware—St. Albans—Dunstable—Stony Stratford—Towcester—Road Weedon. | A. 5 |
| Road Weedon—Daventry By-pass—Dunchurch—Coventry——Meriden—Stonebridge. | A. 45 |
| Stonebridge—Bacon's End | A. 452 |
| Bacon's End—Castle Bromwich By-pass—Birmingham (Junction with A. 452). | A. 47 |
| Birmingham—Mill Green—Shire Oak—Brownhills Common. | A. 452 |
| Brownhills Common—South of Cannock—Gailey—Oaken-gates By-pass—South of Wellington—Shrewsbury By-pass—Whittington—Gobowen By-pass—Chirk—Llangollen—Corwen—Cerrig-y-Druidion—Bettws-y-coed—Bcthesda—Llandegai—Bangor—Llanfair-pwllgwyngyll—Gwalchmai—Valley—Holyhead Harbour. | A. 5 |
| LONDON—CARLISLE—GLASGOW—INVERNESS | London—Hendon Central Station—Apex Corner. | A. 500 |
| Apex Corner—South Minims. | A. 555 |
| South Minims—St. Albans—Luton—Bedford—Irthling-borough By-pass —Kettering—Desborough—Market Harborough—Oadby' By-pass—Leicester—Loughborough—Derby—Belper—Matlock Bridge—Bakewoll—Ashford By-pass—Buxton—Whaley Bridge—Stockport—Manchester—Salford—Blackrod By-pass—Chorley—Bamber Bridge—Preston—Garstang By-pass—Lancaster—Carnforth—Heversham By-pass—Hawes—Kendal—Shap—Penrith—High Hesket By-pass—Carlisle. | A. 6 |
| Carlisle—Kingstown. | A. 7 |
| Kingstown—Gretna—Kirkpat-riok—Ecclefechan—Lockerbie—Beattock Summit—Crawford—West of Coalgill. | A. 74 |
| West of Coalgill—Uddington. | A. 70 |
| Uddington—Lcsmahagow— Blackwood—Larkhall—Hamil-1 ton—Uddingston—Glasgow. | A. 74 |
| Glasgow—Clydebank—Dunglass—Dumbarton—Bonhill—Alexandria—Luss—Tarbet—Ardlui—Crianlarich—Tyndrum—Bridge of Orchy—Glencoe By-pass—Carnach—Kinlochleven—North Ballachulish—Onich—Fort William—Spean Bridge—Invergloy—Invergarry—Invermoriston—Drunmdroch it—Inverness. | A. 82 |
| WINCHESTER—PRESTON | Winchester (Junction with A33)—Sutton Scotney. | A. 31 |
| Sutton Scotney. | A. 30 |
| Sutton Scotney—Whitchurch—Newbury. | A. 34 |
| Newbury. | A. 4 |
| Newbury—East Hsley—Abingdon—Oxford—Woodstock—Long Compton—Shipston-on-Stour—Stratford-on-Avon—Hockley Heath—Birmingham—Great Barr—Walsall—Church Bridge. | A. 34 |
| Church Bridge—Bridgtown. | A. 5 |
| Bridgtown—Cannock—Stafford—West of Stone—Stoke-on-Trent—Newcastle-under-Lyme—Coalpit Hill. | A. 34 |
| Coalpit Hill—Lawton Gate. | A. 5011 |
| Lawton Gate—Rode Heath—Holmes Chapel—Knutsford—Mere—Warrington. | A. 50 |
| North of Warrington—Win wick—Ashton-in-Makerfield—Wigan—Standish—Euxton—Bam ber Bridge (Junction with A.6). | A. 49 |
| East of BIRMINGHAM—BIRKENHEAD | Stonebridge (West of Meriden)—Birmingham. | A. 45 |
| Birmingham—Causeway Green—West of Oldbury—Dudley—West of Coseley—Wolverhampton. | A. 4123 |
| Wolverhampton—Tettenhall— Kingswood Common—Tong—Newport—Whitchurch— Handley—Chester—Gt. Sutton By-pass—Eastham By-pass—Bromborough By-pass—Birkenhead. | A. 41 |
| BIRMINGHAM—GREAT YARMOUTH | Birmingham—Castle Brom-wich By - pass—Bacon's End—Coleshill—Over Whitacre—Nuneaton—Junction with A.5. | A. 47 |
| Junction with A. 47 (Nuneaton Road)—Junction with A.47 (Hinckley Road). | A. 5 |
| Junction with A. 5—Hinckley-Leicester—Billesden—Uppingham—Duddington. | A. 47 |
| Duddington—Junction with A.47 North of Duddington. | A. 43 |
| Junction with A.43 North of Duddington—Wansford—Peterborough. | A. 47 |
| Peterborough. | A. 15 |
| Peterborough—Thorney—Guy-hirne—East of River Nene—Wisbech—King's Lynn—Swaffham—East Dereham—Norwich—Blofield—Acle—Tunstall Bridge—Great Yarmouth. | A. 47 |
| EXETER—LEEDS— | Exeter—Cullompton—Willand By-pass—Beam Bridge By-pass—Wellington—Chelston By-pass—Taunton—Ads-borough Hill By-pass—Bridgwater — Pawlet By-pass—Highbridge—East Brent By-pass—Lower Weare and Cross By-pass—Langford By-pass—Bristol—Filton—Alveston and Thornbury By-pass—Cambridge—Gloucester—Norton | A. 38 |
| By-pass—Tewkesbury—Kempsey—Worcester—Droitwich—Bromsgrove—Birmingham—Sutton Ooldfield—Lawton Grange. | A. 38 |
| Lawton Grange—North of Law-ton Grange. | A. 5 |
| North of Lawton Grange—Lichfield—Burton-upon-Trent—Derby. | A. 38 |
| Derby—Little Eaton and Coxbench By-pass—Ripley—Alfreton—Clay Cross—Chesterfield—Dronfield—Sheffield—Wood-seats—Tankersley—Barns-ley—Staincross Station—Wakefield—Lofthouse—Stourton—Leeds. | A. 61 |
| NEWPORT—SHREWS BURY | Newport—Cross-y-ceiliog—North West of Pontypool Road Station. | A. 4042 |
| North West of Pontypool Road Station—Pont y Pia. | A. 472 |
| Pont y Pia—Penperlleni—Llanelen—Cold brook Park. | A. 4042 |
| Cold-brook Park—Abergavenny. | A. 40 |
| Abergavenny—Llantilio-pertho-Iey—Pandy—Pontrilas—Wormbridge—Hereford. | A. 465 |
| Hereford—Hope under Dinniore—Leominster. | A. 49 |
| Leominster. | A. 44 |
| Leominster—Brimfield—Ludlow—Graven Arms—Church Stretton—Dorrington—Shrewsbury (Junction with A.5). | A. 49 |
| SWANSEA—MANCHESTER | Swansea—Penllergaer. | A.483 |
| Penllergaer—Pontardulais—Fforest. | A. 48 |
| Pforest—Ty-croes—Ammanford—Llandybie—Llandilo—Llanwrda—Llandovery Station—Llanwrtyd Wells—Beulah—Garth—Builth Wells—Llandrindod Wells—Llanbister— Maes-yr-helm—Gwynant—Dolfor—Glascoed—Newtown—Garthmyl—Welshpool—Llanymynech—Oswestry—Gobowen. | A. 483 |
| Gobowen—Chirk—Plas Offa. | A. 5 |
| Plas Offa—The Green. | A. 483 |
| The Green—Ruabon. | A. 539 |
| Ruabon—Wrexham—Pulford—Chester. | A. 483 |
| Chester—Stamford Bridge-West of Tarvin. | A. 51 |
| Tarvin By-pass—Kelsall—Delamere. | A. 54 |
| Delamere—Hartford—Northwieh | A. 556 |
| Northwich. | A. 533 |
| Northwich—Tabley Inferior—Mere—Junction with A. 50. | A. 550 |
| Junction with A. 556—Altrincham—Crossford Bridge—Stretford—Manchester. | A. 56 |
| CHESTER-BANGOR | Chester—Saltney—Hawarden—North of By-pass—Holywell By-pass—St. Asaph—Abergele—Colwyn Bay—Moehdre By-pass—Conway—Penmaenmawr—Llandegai (Junction with A.5). | A. 55 |
| LIVERPOOL—PRESTON—LEEDS— | Liverpool—Aintree Station—Maghull By-pass—Ormskirk By-pass—Burscough Bridge—Rufford—East of Tarleton—Longton—Preston—East of Samlesbury. | A. 59 |
| East of Sanilesbury—Windmill Inn. | A. 677 |
| Windmill Inn—Mellor Brook. | A. 6063 |
| Mellor Brook—Bolton Hall—Whalley—Clitheroe—Gisbum—Broughton Fields—Skipton. | A. 59 |
| Skipton—Addingham—Ilkley—Burley -in- Wharfedale. | A. 65 |
| Burley-in-Wharfedale—Otley. | A. 659 |
| Otley—Bramhope—Leeds. | A. 660 |
| LIVERPOOL—LEEDS—HULL | Liverpool—Moss Side—St. Helens—Lane Head—Booths-town—Roe Green—Irlams-o'-th'-Height. | A. 580 |
| Irlams-o'-th'-Height—Salford—Manchester. | A. 6 |
| Manchester—Failsworth—Oldham—New Delph—Stack End—Marsden—Slaithwaite—Huddersfield— Heckmondwike—Birstall—Gildersome—Leeds. | A. 62 |
| Leeds—West Garforth—Junction with A.1 North of Ledsham. | A. 63 |
| North of Ledsham—East of Ledsham. | A. 1 |
| East of Ledsham—Hambleton—Selby. | A. 63 |
| Selby—Barlby. | A. 19 |
| Barlby By-pass—Osgodby By-pass—Cliffe By-pass—Heming-brough By-pass—Loftsome Bridge By-pass—Howden—Gilberdike—North Cave and South Cave By-pass—Melton By-pass—Hesslewood. | A. 63 |
| Hesslewood—Hessle By-pass—Hull. | A. 1105 |
| SHEFFIELD—GRIMSBY | Sheffield—Rotherham—Thrybergh—Conisbrough—Warmsworth—Doncaster. | A. 630 |
| Doncaster—Hatfield—Scunthorpe By-pass—Junction with A. 15 West of Brigg. | A. 18 |
| Junction with A. 18 West of Brigg—Brigg—Wrawby. | A. 15 |
| Wrawby—Melton Ross—Great Limber—Keelby—Laoeby—Grimsby. | A. 18 |
| NORMAN CROSS—GRIMSBY | Norman Cross (Junction with A. 1)—Peterborough—Glinton—Market Deeping. | A. 15 |
| Market Deeping—Littleworth Station—Spalding—Gosber-ton—Boston—Sibsey—Stickney—East Keal—Spilsby—Ulceby Cross—Burwell—Louth—Fotherby By-pass—Holton le Clay—Grimsby. | A. 16 |
| PENRITH—MIDDLESBROUGH | Penrith (Junction with A.6)—Temple Sowerby—Appleby—Brough—Bowes—Rokeby Park—Scotch Corner. | A. 66 |
| Scotch Corner—Darlington. | A. 1 |
| Darlington—Long Newton—Stockton-on-Tees. | A. 67 |
| Stockton-on-Tees. | A. 19 |
| Stockton-on-Tees—Thornaby-on-Tees—Middlesbrough. | A. 176 |
| CARLISLE—SUNDERLAND | Carlisle—Warwick—Brampton—Greenhead—Haltwhistle—Haydon Bridge—Greenshaw Plain—Hexham—Corbridge. | A. 69 |
| Corbridge. | A. 68 |
| Corbridge—Horsley—Heddon-on-the-Wall—West Denton—Newcastle-upon-Tyne. | A. 69 |
| Newcastle-upon-Tyne—Gateshead. | A. 1 |
| Gateshead—Heworth—Boidon—Sunderland. | A. 184 |
| EDINBURGH—CARLISLE | Edinburgh—Dalkeith—Newton Grange—Stow—Galashiels—Selkirk—Hawick—Teviothead—Langholm—Canonbie—Longtown—Kingstown—Carlisle. | A. 7 |
| EDINBURGH—GLASGOW | Edinburgh—Newbridge By-pass—North of Uphall Station—North of Whitburn—Harthill—Newhouse— Baillieston—Bertrohill—Glasgow. | A. 8 |
| GRETNA—STRANRAER—GLASGOW—STIRLING | Gretna (Junction with A. 74)—Dornock—Annan—Carrutherstown—Dumfries—Crocketford—Castle Douglas— Ringford—Twynholm—Gatehouse of Fleet—Creetown—Newton Stewart—Glenluce—Stranraer. | A. 75 |
| Stranraer—Cairnryan—Ballan-trae—Girvan—Maybole—Ayr—Prestwick—Kilmarnock—Fenwick By-pass—Giffnoek—Glasgow. | A. 77 |
| Glasgow—Stepps—Cumbernauld—Denny—Stirling. | A. 80 |
| TYNDRUM—OBAN | Tyndrum (Junction with A. 82)—Dalmally—Taynuilt—Connel—Oban (Argyll Square). | A. 85 |
| PERTH—ABERDEEN—INVERNESS | Perth—Kinfauns—Invergowrie—West of Dundee. | A. 85 |
| Dundee By-pass. | A. 972 |
| East of Dundee—North of Monifieth—Muirdrum—Arbroath—Montrose—Inverbervie—Stonehaven—Aberdeen—Balmedie—Ellon—Toll of Burness. | A. 92 |
| Toll of Burness—Hatton—Boddam—Peterhead—St. Fergus—South of Rathen. | A. 952 |
| South of Rathen—Fraserburgh. | A. 92 |
| Fraserburgh—North of New Pitsligo—Macduff—Banff—Portsoy—Cullen—Fochabers. | A. 98 |
| Fochabers—Lhanbryde—Elgin—Forres—Nairn—Lochside—Inverness. | A. 96 |