A man has pleaded guilty to causing death by dangerous driving following a crash which killed two women.
Liam Slade, 33, of Aberthaw Circle in Newport, admitted two counts each of causing death by dangerous driving and causing death by driving while disqualified.
The two-vehicle crash happened between junctions 22 and 21 near Bristol in the early hours of Monday 17 July.
The women, aged in their 50s and 60s, were pronounced dead at the scene.
Slade also pled guilty to two counts of causing serious injury by dangerous driving.
He has been remanded in custody and will be sentenced at Bristol Crown Court on 1 December.