A staff member was threatened by a knife-wielding robber during a raid on a betting shop in Gravesend.

It is alleged the man waited while a member of staff emptied the self-service machines before threatening them with a knife and leaving with the cash.

Officers investigating the robbery have released two CCTV images of the suspect.

The robbery is reported to have happened at the Ladbrokes in Windmill Street between 8.25pm and 8.40pm yesterday.

The suspect is believed to be a regular customer of the shop.

Anyone with information is asked to call police on 01474 366149 or Kent Crimestoppers anonymously on 0800 555111 quoting reference XY/49792/16.