Regardless of what the MI's state, it's good practice to FGA a new boiler and takes two minutes, and for the piece of mind it gives then its worth the effort.
as for the bloke who has been prosecuted, of course I feel sorry for him, and by the sounds of it, it was a one off mistake from a trustworthy bloke. But, he has made an error, albeit, not on purpose. But he has to be made accountable for his actions. I wish the bloke no ill intentions, but he has done something wrong, maybe for some the guilt he'll feel for the rest of his life is enough, but for others it won't be.
We still don't know all the facts so can't really make a full judgement on this yet, it will be interesting reading note the gas safe mag next month, so we will just have to wait and see.
everyone has their opinion, which is what makes this such a difficult subject to discuss and agree on.
personally if it is just an honest mistake then I feel the punishment fits the crime, coupled with the guilt he will be feeling makes it enough for me. But until all the facts are known, we can't make a full judgement.