Two men entered the shop in Oldham Town Cente before threatening staff with a screwdriver and making off with a quantity of cash.
No one was injured at the shop in the Town Square Shopping Centre on Monday morning, however staff were left understandably shaken by the incident.
The offenders made off in a grey Suzuki Swift.
No arrests have been made and enquiries are ongoing.
Detective Constable Zulqarnain Tanweer, of GMP’s Oldham division, said: “This was a terrifying incident in which innocent staff members were threatened with weapons.
“We have been following a number of CCTV enquiries which has lead us to be able to release these images of an individual we want to speak to.
“If anyone has any information that could help us to identify this man please get in touch with police.”
