Warn the buyers at Cash Convertors - they get offered an awful lot of stolen gear, also the shops in Denmark St -and the Acoustic Centre---- the guitar will probably be sold on very fast - when I worked in a guitar shop in N London, we stopped a thief who was trying to sell a guitar he'd stolen from a Denmark St shop the very day before, as the owner had called to warn us (it was, like yours, distinctive)
good luck