Police have released a photograph of a man suspected of robbing the post office in WH Smith in the lower level of Churchill Square on Monday 16 April.
The incident happened at 17:10 when the man handed over a note to counter staff saying he had a weapon and would harm people if money was not handed told him the police had been alerted.
He is described as white, 5’ 8” and has a full beard. He was wearing a blue baseball cap, dark glasses, dark Nike trainers with a white tick on the side, red jogging bottoms and a white T-shirt with dark stripes. He had skin coloured tape across his nose and multi-coloured tape around the lower parts of each finger between the two knuckles, possibly to cover up tattoos.
Anyone with information should phone 101 and quote 1067 of 16/04.