Electrics Confusion

[PREM]

It use to be kitchens and outside were special locations. now like Andy and Jonny have said, alter an existing circuit, its not notifiable but will have to fill in a minor works form (1 sheet) Changing like for like with no extending or reduction of a cable nothing is required. As soon an you go back to the consumer and add a circuit or change and mcb to a RCBO, its notifiable and a full installation cert. Even if you only install 10mm bonding its notifiable.
Ive been part P since it came out now just putting my son through it when we find the time to fit the course in.