Never arrested, but I have felt the heavy hand of the law several times.
During the late sixties I ran a fund to pay the fines of people arrested at (anti-Vietnam) demonstrations. That made me really popular with the local constabulary and it became amazing how often - almost every time I left my house - I "fitted the description" of someone they were looking for. The most embarassing occasion was when I was frisked outside Woolworth on a busy Saturday morning. Enough was enough after being stopped twice in one evening and getting home to find three police cars, lights flashing, parked outside. My father was a lawyer and after that he threatened to sue them if there was further harassment, which resulted in me once again having an innocent, or at least an anonymous face
You are or were located in the East End, so you will remember the Krays and Richardsons. My first employers in London were the guys looking after the Richardsons' business while they were inside: that got me listed as an "associate of known criminals" and led to a few "interesting" interviews...