I think there are quite a few UK members here. I travel a lot around the UK with work, and haven't had any real problems at all apart from the odd stare. I reversed into an older lady in a service station on the M3 once, which was rather embarrassing as she blasted the horn on impact so everyone looked. We parked up and I had to get out of the car in my skirt and heels, but no makeup or wig. Then I had to search the car for a pen and paper. She smiled sweetly and was as nice as pie. We exchanged details, but no insurance claim ever came (it was only a gentle bump). On the whole, people have been fine about it - very tolerant. One aggressive-looking bloke looked me up and down in a checkout queue, and said "Nice beard". I said thanks, and he asked me if I was going to a fancy dress party (at 8:30 am). I said "No, I just like dressing like this." He said "Straight up?" and I said "Yup, straight up." And he said "fair enough" and wished me a good day when he left.
I avoid areas where I wouldn't go alone in drab, and so far it seems to be working. I think as long as you don't lurk in dark corners or generally seem creepy, then people here are very tolerant.