A man is fighting for his life after being assaulted by four teenagers.
Police believe a struggle ensued after something was thrown at the victim's car - a black Jaguar.
He's thought to have got out of the car to confront four young men - and during a struggle he sustained a serious head injury.
Police want to trace the boys involved, who are thought to be between the ages of 15 and 17.
They've released these descriptions of three of them:
white, approximately 5ft 6in tall and 15-17 years. He was wearing a black jacket with grey tracksuit trousers and black trainers. It is believed he may have been holding a stick.
white, approximately 5ft tall, with ginger hair and aged between 15 and 17 years. He was wearing a black coat, black trainers and black trousers.
white, approximately 5ft 8in tall with short dark hair. He was wearing a black coat with a light fur trim on the hood, and a blue T-shirt or blue hoodie and black trainers.