Police are hunting an armed robber after a man burst into Ladbrokes in Regent Street this morning and made off with a handful of cash.
The suspect is said to be on the run following the robbery at 9.40am as the Wiltshire Police helicopter is circling overheard to expedite the search.
A police spokesman said he may be armed with what is thought to be a handgun and he made off with a couple of hundred pounds.
Anyone with any information of saw anything suspicious in the area should call 101 immediately.
More to follow.