The A124 road is a road in east London linking Canning Town

Canning Town

Canning Town is an area of east London, England. It is part of the London Borough of Newham and is situated in the area of the former London docks on the north side of the River Thames. It is the location of Rathbone Market...

 with Upminster

Upminster

Upminster is a suburban town in northeast London, England, and part of the London Borough of Havering. Located east-northeast of Charing Cross, it is one of the locally important district centres identified in the London Plan, and comprises a number of shopping streets and a large residential...

.

The road begins at a junction with the A13 road  at Canning Town station

Canning Town station

Canning Town station is an inter-modal transport interchange in Canning Town, northeast London, England. It is served by the London Underground Jubilee line, the Docklands Light Railway and local buses operated for London Buses. It is in Travelcard Zone 3...

 in the south west of the London Borough of Newham

London Borough of Newham

The London Borough of Newham is a London borough formed from the towns of West Ham and East Ham, within East London.It is situated east of the City of London, and is north of the River Thames. According to 2006 estimates, Newham has one of the highest ethnic minority populations of all the...

. The road continues in a north easterly direction for 3 miles (4.9 km) as Barking Road, passing through West Ham

West Ham

West Ham is in the London Borough of Newham in London, England. In the west it is a post-industrial neighbourhood abutting the site of the London Olympic Park and in the east it is mostly residential, consisting of Victorian terraced housing interspersed with higher density post-War social housing...

, Plaistow

Plaistow, Newham

Plaistow is a place in the London Borough of Newham in east London. It formed part of the County Borough of West Ham in Essex until 1965.Plaistow is a mainly residential area, including several council estates; the main road is the A112 - Plaistow Road, High Street, Broadway, Greengate Street and...

 and East Ham

East Ham

East Ham is a suburban district of London, England, and part of the London Borough of Newham. It is a built-up district located 8 miles east-northeast of Charing Cross...

.

The road passes into the London Borough of Barking and Dagenham

London Borough of Barking and Dagenham

In 1801, the civil parishes that form the modern borough had a total population of 1,937; and the area was characterised by farming, woodland and the fishing fleet at Barking. This last industry employed 1,370 men and boys by 1850, but by the end of the century had ceased to exist; replaced by...

 at a crossing of the River Roding

River Roding

The River Roding is a river in England that rises near Dunmow, flows through Essex and forms Barking Creek as it reaches the River Thames in London....

 and there forms a junction with the North Circular Road

A406 road

The A406 or the North Circular Road is a road which crosses North London, UK, linking West and East London. It, together with the South Circular Road, forms a ring road through the inner part of Outer London...

. The road bypasses Barking

Barking

Barking is a suburban town in the London Borough of Barking and Dagenham, in East London, England. A retail and commercial centre situated in the west of the borough, it lies east of Charing Cross. Barking was in the historic county of Essex until it was absorbed by Greater London. The area is...

 town centre as the Northern Relief Road and is then called Longbridge Road for 2 miles (3.2 km), forming a short section of dual carriageway

Dual carriageway

A dual carriageway is a class of highway with two carriageways for traffic travelling in opposite directions separated by a central reservation...

 and part of the borough boundary with the London Borough of Redbridge

London Borough of Redbridge

The London Borough of Redbridge is a London borough in outer north-east London. Its administrative headquarters is at Redbridge Town Hall in Ilford. The local authority is Redbridge London Borough Council.-Etymology:...

.

The road becomes Wood Lane at Becontree

Becontree

Becontree is a place in the London Borough of Barking and Dagenham, east north-east of Charing Cross.-Becontree estate:The area was developed between 1921 and 1932 by the London County Council as a large council estate of 27,000 homes, intended as "homes for heroes" after World War I. With a...

 and continues north easterly for 1.9 miles (3.1 km) as far as Becontree Heath

Becontree Heath

Becontree Heath is an open space in the London Borough of Barking and Dagenham. The name has also been unofficially applied to the local area, in particular to the RM8 postal district....

, where it passes into the London Borough of Havering

London Borough of Havering

The London Borough of Havering is a London borough in North East London, England and forms part of Outer London. The principal town in Havering is Romford and the other main communities are Hornchurch, Upminster and Rainham. The borough is mainly characterised by suburban development with large...

 and becomes Rush Green Road from there to Roneo Corner, a distance of 1.2 miles (2 km). The road then becomes Hornchurch Road and passes through Hornchurch

Hornchurch

Hornchurch is a large suburban town in England, and part of the London Borough of Havering. Hornchurch is in North-East London .It is located east-northeast of Charing Cross and is one of the locally important district centres identified in the London Plan. It comprises a number of shopping...

, where it forms the High Street. After Hornchurch the road becomes Upminster Road and continues past Upminster Bridge tube station

Upminster Bridge tube station

Upminster Bridge tube station is a London Underground station on Upminster Road in the Upminster Bridge neighbourhood of the London Borough of Havering in northeast London, England. The station is on the District line and is the penultimate station on the eastern extremity of that line...

, becoming St Mary's Lane at the River Ingrebourne

River Ingrebourne

The River Ingrebourne, 27 miles in length, is a tributary of the River Thames. It is considered a strategic waterway in London, forming part of the Blue Ribbon Network...

, and ends at Bell Corner in Upminster

Upminster

Upminster is a suburban town in northeast London, England, and part of the London Borough of Havering. Located east-northeast of Charing Cross, it is one of the locally important district centres identified in the London Plan, and comprises a number of shopping streets and a large residential...

 

The road is served by London Buses route 5 from Canning Town to Roneo Corner and by London Buses route 248

London Buses route 248

London Buses route 248 is a Transport for London contracted bus route in London, United Kingdom. The service is currently contracted to Stagecoach London.-History:...

 from there to Upminster; with other routes also serving various sections.

History

The A124 Barking Road formed part of the original A13 route between Canning Town and Barking, prior to the opening of the East Ham & Barking Bypass in 1928, although the latter was briefly designated A118. The original eastern terminus of the A124 was Roneo Corner.