Three men entered the General Store in London Road at 8pm on Sunday, 21 October and threatened staff with a knife and what appeared to be a gun covered with a plastic bag.
The suspects then demanded the till be opened and when it could not left with two bottles of vodka.
Investigating officer PC Beth Finch said:“ I’m hoping the CCTV footage will jog the memories of anyone who was in the area at the time and can remember seeing these men.
“I know it’s not the clearest footage, but someone in Purfleet will know who these people are.
“If you have any information that can help us identify them please get in touch.”
Tags: Purfleet