OP
Octopus
Okay so is it the case that only zone 1 work would have notifiable anyway and what is changing on 6th April is the need for a Part P reg competent person to carry out the work in the bathroom?
So if that's the case, there would be no need to notify outside of Zone 1 and no need to use a Part P either to carry out the work or third-party certify it unless it required a new circuit?
Mate, ring your LABC and see what they say.
This is a forum for sparkies, not a forum for giving DIY advice.