Two ment threatened staff with a gun and stole money and travellers' cheques from a travel agency in Sandwich.
It's thought the men, who were wearing high visibility tabards, were in the town for several hours prior to the robbery.
Kent Police has released CCTV images of the suspects, after the theft on 10th December 2012.
More top news
Amanda Houston has the latest forecast for the west of the ITV Meridian region
Amanda Houston has the latest forecast for the east of the ITV Meridian region
The brother of a Kent sailor killed during the Clipper Round the World yacht race says being aboard his boat will be emotional.