I've got no RCCB protection at all in my new home. (Recently built
apartment)

I'm thinking of changing out the MCB for an RCBO - not a difficult job,
and there's plenty of space in the CU.

But, is this a part P notifiable job?

I've looked through the part P guides but am a bit confused as it says
that 'replacing' is not notifiable except in certain areas.

Hopefully, someone here can clarify.

M