I can conclusively prove that I took the photos and not him, since I have all the RAW files from the camera and all he has are compressed jpegs.  He would have to show he has the original RAW files to if he was to dispute who owned the images.  He also knows, with email as proof that I own all copyright to the images even after he has paid for them, as the service he was paying for did not include the copyright ownership, which is an added cost.

Arrangement was for use on ebay, but since he has not paid me for the photos then surely this voids all usage rights, as an arrangement was made for payment and an amount was specified. I am filling in the vero form tonight and faxing it off tomorrow.  I informed him I would do it and he is still not paying me.  Even with a payment plan, he is not interested.  He keeps saying "I've got to let sales build up" but I have monitored his feedback, he's received over 620 ratings since he received the photos and I worked out an average price of an item in his shop at £22 which is £13.5k, what he owes me isn't even 2% of that!  It is getting ridiculous.  

I am looking at the small claims court too.  

Thanks for the help with the vero stuff.