Hi there, I wonder if anyone can help me. I've recently had an extension on the rear of my house. I employed a local electrician to carry out the wiring etc - who assured me he was part p registered etc. Building inspector has been today, and is insiting on a design and installation certificate. I've been trying to get hold of the electrician for weeks - I'm sure he's gone bust, as his phone is dead and he no longer advertises in the paper. What can I do ?? The extension is now complete, and Building Inspector is insisting on these docs. Can these docs be issued retrospectively by another elecctrician ??