The passenger in a Mercedes struck by an Audi A5 in Lechlade remains in a serious condition in hospital, police said. 

The man was taken to Swindon's Great Western Hospital after the collision on Saturday night. His injuries were not initially believed to be serious.

However, Gloucestershire Constabulary said his condition has since worsened and is now serious. He remains at GWH.

The driver of the white Mercedes, a man, was also taken to the Swindon hospital. His injuries are not believed to be serious. 

A pedestrian, a 46-year-old woman who was on the Half Penny Bridge when she was struck by one of the cars, remains at the John Radcliffe Hospital, Oxford, with serious injuries. Her injuries are not life-threatening.

Gloucestershire Constabulary was called to the A361 Thames Street at around 10pm on Saturday after a collision on the Half Penny Bridge in Lechlade. 

A white Mercedes coupé travelling from Lechlade towards Swindon and a dark blue Audi A5 hatchback travelling in the opposite direction crashed in the centre of the bridge.

A 25-year-old man from Hereford was arrested on suspicion of driving while over the prescribed alcohol limit and causing serious injury by dangerous driving. He has been released under investigation.