Two men entered the store on Walnut Hill at approximately 4pm on Thursday 2 February and approached a member of staff.

One of the men was carrying what is believed to have been a handgun and demanded the till to be opened before taking an undisclosed quantity of cash.

The second man entered another room in the store and also stole an undisclosed quantity of cash.

Detectives have arrested four people in connection with the robbery. Three men and one woman, all in their 30s and from the Norwich area, have since been released on police bail pending further enquiries until the end of March.

Officers are still keen to hear from anyone who may have seen anyone or any vehicles acting suspiciously in the area around the time of the robbery, and in particular from anyone who may have dashcam footage taken in the area around the time of the incident.

Anyone with information should contact DC Lee Marriner at Norwich CID on 101. Alternatively contact Crimestoppers anonymously on 0800 555111.