Yeah I guess its lucky nothing worse happened although I really don't see how it could as they were both shorter than me and obviously didn't have a weapon. They took his glasses and were trying to convince him to hand over his wallet which had a lot of cash in it. I walked a little away and told them I was ringing the police, they didn't really believe I was until I started telling the person on the phone my friend was being mugged and then they realised and legged it. I was really impressed with the police though. There were two patrol cars there within about 5 minutes (although the boys were long gone, they probably lived near by and had run into their house). Still the police were excellent, they scouted around for them, then as we started walking home they came to my house (I'd given them my address) and wrote down a full report of it all. They were really helpful, even though we know the chances of them being caught is slim to none, and technically it was only a pair of glasses (albeit costing about £130), but I'm glad I actually reported it al properly. I've had a situation before where I've rung the police and they've done nothing. I also got to ride in a police car! That was kinda weird!