I doubt WMP stop more than a couple a night for kerb crawling, and nick far less than that. The days of your name in the Evening Mail are long gone.
As someone who drives round Birmingham for work I'd be more worried about getting robbed or having your vehicle jacked once you're parked up. Especially so in the areas mentioned. WMP won't give a shit about that either. And quality will be grim, with the chance of finding a gem close to zero.