bit late now - unless they're still going for it but..
Originally Posted by Noise Abatement website
Q: My neighbour keeps having parties and plays loud music until 4 or 5 in the morning. What time can I get them to turn it off?
A: The Noise Act 1996 states that the hours of “night” are 11pm to 7am so technically loud music from a party should be turned off, or at the very least down at 11pm.
However, if you and your neighbour can come to an arrangement as to when the music is turned off, then this will probably save a lot of upset all around. Perhaps you are prepared to let them party until 1am on the odd occasion? And then perhaps they can repay the favour should you want to have a party of your own.
If the parties are constant, and your neighbour is not responding to your requests then you can make a complaint against your neighbour by contacting your
local authority in the usual way. See our How To Make A Complaint section.
above information was taken from..
http://www.noiseabatementsociety.com...ew.do?page=283
For next time
you know there will be one