I need to have a new boiler installed asap in a 3-bed semi in Bedfont. The property currently has a very old Kingfisher boiler (Kitchen floor) with a cold water tank (loft) and a hot water cylinder (bathroom). I'm hoping that I can just replace all with a simple combi boiler but I don't know how big a job that's going to be. Water pressure is on the low side as well. Can anyone recommend a gas safe boiler engineer or give any suggestions?