M4 Closed after vehicle leaves carriageway as emergency service battle to save person who has gone into cardiac arrest

The M4 motorway on the Berkshire/ Wiltshire border is currently closed westbound between Junction 14 Hungerford/Wantage and Junction 15 Swindon/Marlborough due to a serious collision.

All emergency services have been called to an upturned vehicle that has come to rest up an embankment near Membury services.

The driver is suspected to have had a medical episode moments before the collision and remains entrapped in the vehicle 

Paramedics are carrying out cycles of CPR  after the driver went into cardiac arrest. It is understood that the driver has been left with life-changing injuries.

Wiltshire Police currently lead the response to a serious collision that took place at approximately 11pm Sunday evening. The closure is expected to remain in place throughout the night.

Diversion route

Road users are advised to follow the hollow square diversion symbol on local road signs.

  • Leave the M4 at J14, at the roundabout take the first exit and join the A338.
  • At the A4 mini roundabout turn right on the A4 towards Hungerford avoiding Hungerford town centre. After a short distance to the next roundabout take the 2nd exit onto Charnham Park.
  • Turn right onto the B4192 and follow for approximately 13 miles through Aldbourne to the A419 roundabout. 
  • Take the first exit and joint he A419, continue to rejoin the M4 at J15.