Thanks James. Yes, is a bit too intimidating to go round at 3am to distrupt a student party (and not sure it would be effective), but will go round this evening after work and speak to them. I had wondered about the 101 number but wasn't sure it was appropriate ? will definitely log it with them in future. The council noise team are perfectly pleasant, but say there's nothing they can do without getting evidence (i.e. witnessing it) and they don't come out between 2:30am-7am. Seems that the time when the service is most needed is the time when they don't work. Madness! I'm not sure if there is any way of finding out who their landlord is, or which university/college they attend, without them telling me? Thanks for the advice. Fingers crossed can deal with it before I start falling asleep on my desk.