A4421

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A4421
Location Map ( geo)
Cameraicon.png View gallery (1)
From:  Bicester (SE) (SP591212)
To:  Finmere (SP638324)
Distance:  8.5 miles (13.7 km)
Meets:  A41, B4100, A4095, A421
Former Number(s):  A421
Highway Authorities

Buckinghamshire • Oxfordshire

Traditional Counties

Buckinghamshire • Oxfordshire

Route outline (key)
A4421 Bicester – Finmere
The Chiltern Main Line railway bridge over the A4421 Bicester bypass

The A4421 is a short road in Oxfordshire. It partly follows the former route of the A421 before that road was rerouted onto what had been the B4031 to reach the A43.

The route starts, at a roundabout junction with the A41, as the Bicester eastern bypass and runs along a brief section of dual carriageway, before dropping to single. The bypass has several different names along this section. After a couple of roundabouts near Launton, the road turns right close to Bicester Airfield – with the bypass continuing as the A4095 – and picks up the original A421 alignment.

The A4421 then follows the line of the Oxford – Towcester Roman road and has a speed limit of 50 mph. It passes through the hamlet of Newton Morrell and the village of Newton Purcell where the limit falls to 40 mph.

The route ends at a roundabout on the Finmere bypass near the old aerodrome, where it meets the current line of the A421.



A4421
JunctionsRodney House Roundabout
RoadsNCN51
PlacesBicester • Buckingham
Related Pictures
View gallery (1)
A4421, the Bicester by-pass, goes under the railway bridge - Geograph - 1588587.jpg
Other nearby roads
BicesterA34 • A4095 • A41 • A421 • A43 • Akeman Street • B4011 • B4029 (Oxfordshire) • B4030 • B4100 (Bicester - Bishops Tachbrook) • E05 • Longest Lane • M40 • NCN51 • T35 (Britain)
BuckinghamA413 • A421 • A422 • B4031 • B4034 • C137 (Buckinghamshire) • C15 (Buckinghamshire) • C18 (Buckinghamshire) • C3 (Buckinghamshire) • C51 (Buckinghamshire)
A4400-A4499
A4400 • A4401 • A4402 • A4403 • A4404 • A4405 • A4406 • A4407 • A4408 • A4409 • A4410 • A4411 • A4412 • A4413 • A4414 • A4415 • A4416 • A4417 • A4418 • A4419
A4420 • A4421 • A4422 • A4423 • A4424 • A4425 • A4426 • A4427 • A4428 • A4429 • A4430 • A4431 • A4432 • A4433 • A4434 • A4435 • A4436 • A4437 • A4438 • A4439
A4440 • A4441 • A4442 • A4443 • A4444 • A4445 • A4446 • A4447 • A4448 • A4449 • A4450 • A4451 • A4452 • A4453 • A4454 • A4455 • A4456 • A4457 • A4458 • A4459
A4460 • A4461 • A4462 • A4463 • A4464 • A4465 • A4466 • A4467 • A4468 • A4469 • A4470 • A4471 • A4472 • A4473 • A4474 • A4475 • A4476 • A4477 • A4478 • A4479
A4480 • A4481 • A4482 • A4483 • A4484 • A4485 • A4486 • A4487 • A4488 • A4489 • A4490 • A4491 • A4492 • A4493 • A4494 • A4495 • A4496 • A4497 • A4498 • A4499