Welcome to the InvetorSpot community. WOW!! I am seething just reading about this. Were I in your shoes, I would definitely consult a good barrister in the UK. I would be reluctant to get into infringement litigation, and would focus, instead, on criminal fraud charges because of the fraudulent use of your internet site, trademarks, tradedress, as well as infringement. It might be easier and less costly to obtain restitution from this *arse* with the looming specter of a criminal conviction.