Again, I don't know why one wouldn't just say it, rather than someone else fall victim to it for failure to google "london based tele builder scam".
I effectively did to be fair

I managed to get a number for Sam and what appears to be his current occupation - East London Guitar Repair -
As I said, I not found anything dubious other than my own experience (although the books opened for 5 guitars and I haven't seen any) so I didn't want to post until I knew more.