Just had the annual service on the boiler and was told it was leaking carbon monoxide and had to be shut down and disconnected from the gas supply. So going into Xmas with no central heating or hot water and nothing can be done for another week. The boiler was pretty old and better safe than sorry I suppose but we're supposed to be moving out in a month or so and really didn't want to have to spend money on a new boiler. And we don't have an immersion heater so no alternative source of hot water.
The upside is that British Gas said they'll do it for half price as it's an old boiler and I'm going to ask the buyers for half of that so it's hopefully not that bad a hit. Plus it looks like it's going to be quite mild. Ah well, they say central heating is unhealthy....