A neighbour of mine has just finished a loft conversion (he's a builder) and was complaining that the Building Inspector is demanding a "Part P" certificate for the new wiring. The Inspector has signed everything else off. A mate of his who is an electrician told him he could get the "Part P" forms from the NIC-EIC.
Under the circumstances, what's to stop him buying some forms from an electrical wholesaler and just filling them in? Given that Building Control are refusing to do their job and "Part P" is irrelevant, I'd be tempted to do it.
T