I had a engineer come do a annual boiler check, he ticked off all the checks and signed it off. Then the boiler filter started leaking! So i had to get another british gas engineer out to look at it, he actually knew what he was doing, but he said that the first engineer did not check it at all, it was impossible to check as it is locked/seized and wouldn't budge. So british gas rip you off, dont do the job correct and seeing as though it is GAS related it is a very serious matter! I had to fork over £255 to British gas for a new £80 filter to be installed to stop the leaking (1 hour to fit). Absolute joke, It wasn't leaking until the british gas guy came over, so i'm sure he tried to get into it and when he couldn't move it he left it slightly open. If it was leaking before he came then why has it been signed off? Why isn't there damaged chipboard flooring under the boiler? Chipboard doesn't do well with water so that says it all really. Either way: he damaged it or didn't even check it and signed it off as checked!