A man entered B&Q on Heath Road at around 12:51pm on Sunday, September 5 and then walked out to the garden area at the rear of the shop, before returning inside.
About a minute later, the man is said to have taken a Louis Vuitton Clutch Bag from a trolley at the rear of the store. He then left the store with the handbag.
The man is described as between 5ft 8ins and 5ft 10ins of slim build and in his 30s.
He is said to have had short cropped/shaved hair, was wearing a white baseball cap, a white and multi coloured patterned t-shirt, navy blue joggers with red stripes and light-coloured trainers.
Anyone with information is asked tocall 101, quoting incident number 214 or the niche crime number of 21000515822.