Crikey guys!! Bet this chaps wishing he never asked the question!
It looks like he did actually know that it wasn't notifiable as he mentioned not starting a new circuit, and he was just looking for a bit of reassurance as he wanted to do the right thing. He also mentioned the MWC which would be ok for extending a circuit, although he would actually need 2 MWC's as extending both lights and sockets.
I think you may have scared him off :leaving:
And your point is !!!! There are a lot of people that need scaring off from doing electrical work that they are not trained or competent to do