If you're qualified (and competant) and see an AR situation you are duty bound to act on it. If he was sales rep and not qualified he can only speculate on if it is AR or ID on previous discussions but obviously it's different if he's registered.
As for whether he's considered to have worked on it or not it doesn't matter as he has seen it and must act. BG have their operational procedures explaining their course of action which are written from the Gas Safe TB regarding flues in voids and hatches.
You couldn't say to a coroner's court 'I know I saw something ID but ignored it as I was working on it,' if it was AR he should have acted.
The drive by is a little different as you could drive round your local town and see hundred's of flue's that are incorrect; I have seen really dodgy ones in the past and dropped a note through the door with my number on it for advice but apart from that you don't have any authority; even rung the old CORGI whi didn't want to get involved on one.
As for whether he's considered to have worked on it or not it doesn't matter as he has seen it and must act. BG have their operational procedures explaining their course of action which are written from the Gas Safe TB regarding flues in voids and hatches.
You couldn't say to a coroner's court 'I know I saw something ID but ignored it as I was working on it,' if it was AR he should have acted.
The drive by is a little different as you could drive round your local town and see hundred's of flue's that are incorrect; I have seen really dodgy ones in the past and dropped a note through the door with my number on it for advice but apart from that you don't have any authority; even rung the old CORGI whi didn't want to get involved on one.