“We are following several lines of enquiry to find the man responsible. As part of our investigation we have spoken to staff at the shop and studied CCTV footage of the incident
“I believe the man in the stills we are issuing can help us. I would ask anyone who recognises him to contact us.”
Anyone with information can call British Transport Police on 0800 40 50 40, or text 61016, quoting reference SSUB/B5 of 25/06/201. Alternatively call Crimestoppers anonymously on 0800 555 111.