I dont think he was a mod at school, he kind of got into it following the 90's Britpop thing. He now says he never actually liked it and it was a character front to deal with the fame and fortune, despite him dressing like it before he was famous.
I've got a few bits from his Fred Perry collaboration - not for his endorsement but I do like the mod influence/cycling crossover they have.
I think Mark Powell was his tailor, at least, in peak times.