Two males entered Iceland store in Central Square between 6.20pm and 6.40pm on Thursday 9th December and selected alcohol to a value of £15.
The pair left the store without offering payment for the goods.
Police Constable Emma Goodall said: “One of the individuals picked up a bottle of Advocaat and the other picked up two bottles of wine. No payment was offered by either male as they left the store.â€
She added: “I am hoping that someone will be able to identify the pair from the CCTV images.
“If anyone knows who they are, I would urge them to call me on 0300 333 3000.â€
