On Sunday (2 December) police received a report of an incident at Ladbrokes on Birley Spa Lane.
At approximately 3.50pm, it was reported that two men armed with a knife entered the premises.
One of the men approached the counter and threatened a member of staff demanding money from the till. He also threatened a second member of staff and told them to open the safe.
The two men fled the store with a substantial amount of cash. No one was injured, however, staff were left extremely shaken by their ordeal.
Officers would ask anyone who witnessed the incident or has any information about the pictured men to please call 101, or Crimestoppers anonymously on 0800 555111, quoting incident number 579 of 2 December 2018