While I am having loft converted do your lads think that it would be a good time to have my consumer unit changed for one that is a bit more modern.At present I have a Memera 21 with MCB,s.I will be having a trician for supplying the lights and sockets for the loft also some tidying up of the wiring up there.What sort of price would this be certifying testing all circuits ect,roughly.