grey released the lad to his first proper large-scale operation , while recalling his own : too young for the miners strike , a trainee during the poll tax disputes , he had first formed a line as a very young constable , at , of all places , a music festival ; one of the first paying , legal dance music events of the early nineties , the acid house raves of recent years having petered out in a low miasma of law changes , drug busts and general bad vibes .