I discussed with my local Police when he said he was coming to my house; they said I'm not far from the station and just call 999 if he turns up.
They weren't so interested in taking any action regarding the fraud itself, as I'd already raised the case with Action Fraud and gave them the reference.
It has been raised with Leicester police and some have contacted the local Trading Standards.
There are also cases raised with the Musicians Union, more targeting the question of musicians' unpaid fees than the sales fraud.