Emergency services shut down a car park yesterday after two cars were involved in a crash.

Hertfordshire Constabulary was called on Sunday afternoon to reports of a two-vehicle collision in Century Retail Park, Watford.

A blue Toyota Yaris and a white Toyota Prius were involved in the incident, police said.

Video footage posted on social media shows two cars had been in collision at a roundabout at the entrance of the car park.

It also shows at least two police cars had attended the scene as well as an ambulance. A number of cars were seen to be unable to enter or leave the car park as the incident was being dealt with.

Police say one of the drivers involved in the collision may have suffered a "medical episode" following the crash and was taken to hospital for treatment.