A engineer capped our gas fire because he said a flu was damaged not only is this flu nothing to do with the fire he should have noticed that the dimensions were all wrong for this flu to be connected to a fir. On this engineer advise we had a very expensive fitted then when we had a new fire fitted we were told that the flu liner was not required as the chimney is clay lined & never fail so British Gas should refund the cost of fitting the flu liner then having it removed