M40 J12 Improvement

Scheme outline

The aim of this scheme is to increase the capacity of M40 J12 in order to relieve congestion. Currently, a problem arises during the morning rush-hour when queues of up to 2km can form along the hard shoulder of the southbound carriageway - most of this traffic is heading for the Jaguar Landrover and Aston Martin sites at Gaydon.

The scheme involves widening and lengthening the southbound sliproad at J12 of the M40. Capacity improvements will also be made to the junction with the B4451, along with traffic control measures.

In a separate, but complementary scheme, Warwickshire County Council will carry out £8.8m of improvements to the local road network to improve capacity. This will include dualling a section of the B4451/B4100.

A public exhibition about the junction improvements was held in April 2014.

This scheme was completed in and we're no longer accepting updates or changes to this page.

Junction improvement
with parts under motorway restrictions
Highway authority
Central Government


This scheme has been completed and we are no longer accepting progress updates.
19 March 2015

Work on this scheme started on 18 March 2015.

3 May 2017

The scheme is finished and fully open to traffic.

More information


With thanks to Andrew and Michael Pritchard for information on this page.