OP
Lex
To LEX
If you involve the DNO then they may require a BS7671 cert or other certificate of safety/compliance before reconnecting.
I'm hoping that you have a full set of calibrated test equipment so you can check your new consumer unit?
I am also hoping that you have (or will) notify the local authority before starting work, or are you a registered electrician?.
I have a fluke for testing. I'm registered with JIB but haven't told the local authority anything just yet. I've spoken to the DNO, they are coming out to fit a proper isolator so this issue won't come up again.