They're put together in the UK ,but don't know where Mark sources his parts from.
I believe he winds his own pickups and they sound incredible. I couldn't be happier with mine!
Normally a 70's guy (have a set of the 70s wind in my Valenti, and had Nordstrands in an old Fender) but I'm loving the sound of the 60s pickups in the above video!
I used to run aVintage in to a B7K. Vintage as the overdrive and B7K as the preamp for general tone.
Have now decided that a Vintage deluxe would suit me better so sold the vintage.