I'm glad you got some helpful advice, as well as the rest.Thank you for the people who actually did want to help and in answer to the last question, no, it's probably not worth paying for LABC to come out and nod his head when all I am doing is replacing an oven but that's the rules we have to play by I guess.
Just one point. What you've just written seems to imply that you perhaps intend to 'play by the rules' (regardless of what you/I may think about those rules) and notify LABC about this work. If that's the case, do you realise how much they're likely to charge you?
Kind Regards, John.