In the time it took that Engineer to do all that paperwork (AR) he could have found the terminal, fixed it back with a couple of self tappers, measured the flue length to compare with MI's - if that terminal is less than 2 mtr from the ground it will need a wire guard this could be classified as NCS at worst, but then some companies see a boiler of that age and think pound notes!!£££££££££££££££££££££££££