What is it with gas boilers? You buy one and then, twenty years later, you have to buy one again. The plumber who was kind enough to turn out today took one look at the bits of bent metal stuck on the wall of our garage and, after a sharp intake of breath (always an expensive sound in my experience) told us that it was pretty much worn out. We could replace the bit that might be broken and then find that it either works for a while or something else, that can't be replaced, is also broken. It looks like it might be new boiler time. This could put on hold any camera upgrades for a while.