I'm sure some will remember The Point in Cardiff Bay being forced to close down because of noise complaints from neighbours (who as far as I can tell moved into the area after it was opened in 2003). Someone has just told me about this e-petition going around seeking to make people who move into properties near music venues sign a disclaimer acknowledging that there is a pre-exisiting music/entertainment venue.
http://epetitions.direct.gov.uk/petitions/70689 I think this is a major flaw in the planning system, an entertainment venue that creates noise can rightly be stopped from opening in a residential area, yet there is no protection for a pre-existing venue from a residential area being created around it with residents then able to complain about noise.