A man threatened to shoot staff during a failed robbery attempt at a Thame service station at 5.30am on Sunday.

He man forced open the automatic doors to the Sainsbury petrol station in Park Street.

A staff member went to investigate but the intruder threatened to shoot him.

The staff member - who has not been identified - raised the alarm, while the intruder tried to break into the tills before running off.

Police said the man is about 5ft 9ins tall, medium build, wearing a light coloured top with the hood pulled over his head and a scarf or balaclava covering his face. Witnesses should call 01844 264942.