You'll probably find your British Gas cover is rubbish, too. In ten years they'll say you need a new boiler. Your payments would have almost paid for a new one by then.
They will be making sure it isn`t too old and needy of repairs. My fire used to be working before they came,and not after they`d gone. They always said the same we`ll send a BG engineer this time the first one was a contractor.