On Friday, on my way home from the shops, I was stopped by a man saying he locked his suit jacket and car keys in his car and has no money to get home to get the spare key, and could I lend him enough money to go home by train. I didn't know whether to believe him or not, but thought I'd give him a fiver on the chance that he was genuine. Unfortunately I only found a tenner in my bag and gave it to him. He took my (first) name and address, promising to return it in a couple of hours. Needless to say, I never saw the money again. When I told my friend this incident, she was horrified that I gave him my address. A tenner is the price for my idiocy and I am not concerned about the money coming back, but wondering if I should have reported this, to protect other possible victims? Sorry to sound obtuse, but do I just walk into a police station?