This is quoted from the Brockly forum but affects Forest Hill also :

" there is currently an arrivals pilot scheme (pardon the pun!) being run by Heathrow at the moment. The effect of this is that Brockley is under one of the Boxes of areas which is now experiencing more aircraft passing by, starting from as early as 4.30am. This trial period started on 5 November 2012 which fits in exactly with the disturbances I , and some neighbours have experienced, which seem to be getting worse. It is due to compete in March 2013 although if it is considered a success it may become permanent.

We need as many people as possible who live in the area and are experiencing this disruption (or who simply want to support their neighbours) to log their complaints by calling this number: 0800 344844 or at noise_complaints@baa.com

Suggest all those who want this "trial" where we get disproportionately more of the early flights lodge their complaints before the trial is over and we get it permanently