Size means nothing mate
I have done the same mate don't worry about it (there only so much a person can take) it happened to me in the middle of Newcastle on a sat night didnt work out well for the person as when I and a friend got out he reversed in to the car behind so we just laughed and drove away karma's a bitch so it's not just confined to london , just remember there's plenty of dicks about which will push you and abuse you for doing the right thing just keep your cool and hopefully one day you will have the pleasure of seeing them crash