They got in through a sash window at the front of the flat I believe using a crow bar or something like it (sash windows seem to be their prime target). The windows were all bolted permanently shut but the bolts split through the frame. Landlord has repaired them now and reinforced. There is something up on the met police website for Lewisham asking for any information and they're aware that I've put these posts up on here and on se23.com and have been seeing what others are saying. The burglars were very specific about what they took, focusing only on electronics and jewelerry, no drawers or cupboards overturned or anything.