My mum had a new boiler installed, a big job because it was moved to a new location in the house. This cost the best part of 10k I believe. We just had a plumber round to fit a new kitchen tap and he discovered the hot water tank was leaking around a pipe. He said it was never installed properly only "hand tightened". My mum is elderly with dementia so she struggles to keep on top of things, therefore she didn't alert us to the small damp patch on the kitchen ceiling where the pipe upstairs had been dripping. I called British Gas about this, only to find out that she was 17 days beyond her warranty and they would not come to rectify it unless we pay. I fully understand the need for a cut off period on a warranty, but this issue had clearly been going on for more than 17 days and was a poor/faulty installation issue, rather than a boiler breakdown.