Northamptonshire is a ceremonial county in the East Midlands of England. It borders Leicestershire, Rutland, and Lincolnshire to the north, Cambridgeshire to the east, Bedfordshire, Buckinghamshire, Oxfordshire to the south, and Warwickshire to the west. The county town is Northampton.
The A3, known as the Portsmouth Road or London Road in sections, is a major road connecting the City of London and Portsmouth passing close to Kingston upon Thames, Guildford, Haslemere and Petersfield. For much of its 67-mile (108 km) length, it is classified as a trunk road and therefore managed by National Highways. Almost all of the road has been built to dual carriageway standards or wider. Apart from bypass sections in London, the road travels in a southwest direction and, after Liss, south-southwest.
Towcester is an affluent market town in Northamptonshire, England. Until April 2021, it was the administrative centre of the South Northamptonshire district, but has since formed part of West Northamptonshire.
The M40 motorway links London, Oxford, and Birmingham in England, a distance of approximately 89 miles (143 km).
The A40 is a trunk road which runs between London and Goodwick (Fishguard), Wales, and officially called The London to Fishguard Trunk Road (A40) in all legal documents and Acts. Much of its length within England has been superseded by motorways, such as the M40, and has lost its trunk road status, though it retains it west of Gloucester, including its length within Wales. It is approximately 260 miles (420 km) long. The eastern section from Denham, Buckinghamshire to Wheatley, Oxfordshire is better served by the M40 and its former function of linking London with Cheltenham and Gloucester has been taken by the M4, A419 and A417 via Swindon.
The A5 is a major road in England and Wales. It runs for about 243 miles (391 km) from London to the Irish Sea at the ferry port of Holyhead. In many parts the route follows that of the Roman Iter II route which later took the Anglo-Saxon name Watling Street.
The A6 is one of the main north–south roads in England. It runs from Luton in Bedfordshire to Carlisle in Cumbria, although it formerly started at a junction with the A1 at Barnet. It is the fourth longest numbered road in Britain; only the A1, A38 and A30 are longer.
The A57 is a major road in England. It runs east from Liverpool to Lincoln via Warrington, Cadishead, Irlam, Patricroft, Eccles, Salford and Manchester, then through the Pennines over the Snake Pass (between the high moorlands of Bleaklow and Kinder Scout), around the Ladybower Reservoir, through Sheffield and past Worksop. Between Liverpool and Glossop, the road has largely been superseded by the M62, M602 and M67 motorways. Within Manchester a short stretch becomes the Mancunian Way, designated A57(M).
The A14 is a major trunk road in England, running 127 miles (204 km) from Catthorpe Interchange, a major intersection at the southern end of the M6 and junction 19 of the M1 in Leicestershire to the Port of Felixstowe, Suffolk. The road forms part of the unsigned Euroroutes E24 and E30. It is the busiest shipping lane in East Anglia carrying anything from cars to large amounts of cargo between the UK and Mainland Europe.
The A47 is a major road in England linking Birmingham to Lowestoft, Suffolk. Most of the section between Birmingham and Nuneaton is now classified as the B4114. From Peterborough eastwards, it is a trunk road.
For other roads with the same name see List of A21 roads.
The A45 is a major road in England. It runs east from Birmingham past the National Exhibition Centre and the M42, then bypasses Coventry and Rugby, where it briefly merges with the M45 until it continues to Daventry. It then heads to Northampton and Wellingborough before running north of Rushden and Higham Ferrers and terminating at its junction with the A14 in Thrapston.
The A350 is a north–south primary route in southern England, that runs from the M4 motorway in Wiltshire to Poole in Dorset.
The A509 is a short A-class road for north–south journeys in south central England, forming the route from Kettering in Northamptonshire to the A5 in Milton Keynes, via M1 J14.
The A505 is a road in the East of England. It follows part of the route of the Icknield Way and the corresponding Icknield Way Path and runs from Leighton Buzzard in Bedfordshire to the A11 Abington Interchange North in Cambridgeshire.
The A6 road in Northern Ireland runs for 71.4 miles (114.9 km) from Belfast to Derry, via County Antrim and County Londonderry. From Belfast to Randalstown the route has been superseded by a motorway. Mostly single carriageway, there are sections of dual carriageway in Antrim town centre and from Randalstown to Toome, including the Toome bypass. In urban and suburban districts of Belfast and Derry the route is single carriageway with 4 lanes. In rural parts, there are numerous climbing lanes along the route. The A6 is one of Northern Ireland's most important arterial routes, as the road runs between its two largest cities and urban areas. Between Randalstown and Derry the road forms part of European route E16. There is a new dual carriageway between Drumahoe and Dungiven, which is still under construction as of February 2023.
The A556 is a road in England which extends from the village of Delamere in Cheshire West and Chester to the Bowdon Interchange in Cheshire East, bordering Greater Manchester. The road contains a mixture of single and dual carriageway sections and forms a large part of the route between Manchester and Chester. It also acts as a major access route to Chester/North Wales to the west and to Manchester to the east for the conurbation of towns and villages around the Dane Valley centering on Winsford and Northwich. The central part, which forms the Northwich Bypass between Davenham and Lostock Gralam, suffers because of the amount of commuter traffic from this area. The part of the route between the M6 motorway Junction 19 and the M56 motorway Junction 7 is a major route into Manchester and has been recently upgraded to a four-lane dual carriageway.
The A26 is a road in Northern Ireland. It travels in a north–south direction from Coleraine, County Londonderry to Banbridge, County Down.
The A6003 links Kettering and Corby in Northamptonshire, with Oakham in Rutland, via Leicestershire. The road forms the principal link between Rutland and Northamptonshire.
M40 J10
M1 J15a
A1 
A14 J7 & J8
A45 
A47 
A5 
