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Location Map ( geo)
Cameraicon.png View gallery (1)
From:  Wembley (TQ170846)
To:  North Harrow (TQ135887)
Distance:  4.5 miles (7.2 km)
Meets:  A4005, A4127, A312, A404
Old route now:  A404
Highway Authorities

Ealing  • Harrow

Traditional Counties


Route outline (key)
A4090 Wembley - North Harrow
A4090 North Harrow - Hatch End
This article is about the current A4090, a road from Wembley to North Harrow.
For the original A4090, which ran from the A404 to the A416 in Amersham and is now the A4154, see A4090 (Amersham)


The A4090 is an urban A-road in west London, whose route follows close to the Rayners Lane / Uxbridge branch of the Piccadilly Line from Alperton northward to Rayners Lane.

Beginning close to Alperton off the A4005 Bridgewater Road, the road heads towards the West, parallel to the A40 along the residential Whitton Avenue East. It meets theA4127 Greenford Road at traffic lights. Last time I used this junction, each of the 4 roads had its own green phase and it wouldn't surprise me if there wasn't also a full pedestrian phase to go with it. This did not seem like a great idea at the time as it took a while to get your own green phase but eventually you get through the junction and are now, perhaps not surprisingly, in Whitton Avenue West.

At the next roundabout with Wood End Lane you might wish to turn left if you wish to join the A312 southbound, perhaps because you used this route rather than the A40 earlier and now wish to go to Heathrow. If you want to take the formal route though, wait until the next roundabout with Petts Hill. At this point we are slightly further north than we were at the start but have primarily gone west, but from this point on we go more north than west. For a short while we share the road with the A312 until we go under a railway bridge. Then, at traffic lights, the A312 takes the right branch which is Northolt Road and the A4090 takes the left branch, Alexandra Avenue.

Alexandra Avenue

The Piccadilly Line has remained slightly north-east of our route all along but now we finally actually get to cross it at Rayners Lane station which is on the route. The road Rayners Lane itself is an unclassified road that comes off to the left at this point. The A4090 goes almost due north now and even a little back to the East along Imperial Drive, some of which is dualled, until it meets the A404 just after North Harrow (Metropolitan Line) station, with the name aptly changed to Station Road for this very last short stretch.

Ahead is still Station Road but is no longer classified. In a sense this makes sense as the road is now heading East which is contrary to the main direction that the A4090 has taken.


The A4090 appears to be a new-build road dating to the 1930s or 1940s and gained its current number after World War II.

Previously the road did not end at North Harrow but had another section along what is now the A404 along George V Avenue and St Thomas Drive. At the time the A404 itself went through the centre of Pinner and the A410 terminated further to the West.

Related Pictures
View gallery (1)
Rayners Lane- Alexandra Avenue - Geograph - 84033.jpg
Other nearby roads
A40 • A312 • A404 • A409 • A410 • A4005 • A4006 • A4008 • A4125 • A4127 • A4140 • B358 • B457 • B458 • B459 • B460 • E13 • Longest Lane • M1 • M16 • Ringway 3
A4000 • A4001 • A4002 • A4003 • A4004 • A4005 • A4006 • A4007 • A4008 • A4009 • A4010 • A4011 • A4012 • A4013 • A4014 • A4015 • A4016 • A4017 • A4018 • A4019
A4020 • A4021 • A4022 • A4023 • A4024 • A4025 • A4026 • A4027 • A4028 • A4029 • A4030 • A4031 • A4032 • A4033 • A4034 • A4035 • A4036 • A4037 • A4038 • A4039
A4040 • A4041 • A4042 • A4043 • A4044 • A4045 • A4046 • A4047 • A4048 • A4049 • A4050 • A4051 • A4052 • A4053 • A4054 • A4055 • A4056 • A4057 • A4058 • A4059
A4060 • A4061 • A4062 • A4063 • A4064 • A4065 • A4066 • A4067 • A4068 • A4069 • A4070 • A4071 • A4072 • A4073 • A4074 • A4075 • A4076 • A4077 • A4078 • A4079
A4080 • A4081 • A4082 • A4083 • A4084 • A4085 • A4086 • A4087 • A4088 • A4089 • A4090 • A4091 • A4092 • A4093 • A4094 • A4095 • A4096 • A4097 • A4098 • A4099
Earlier iterations: A4008 • A4013 • A4015 • A4020 • A4032 • A4040 • A4041 • A4044 • A4045 • A4047 • A4050 • A4051 • A4052 • A4053 • A4057
A4060 • A4062 • A4066 • A4068 • A4069 • A4071 • A4072 • A4073 • A4074 • A4080 • A4082 • A4084 • A4085(N) • A4085(S) • A4087 • A4090

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