He finally had a long chat with kitchen fitter. The fitter said he could not actually issue Prat P paper work (and advised the fitting company) as the electrical Part P work he did was subsequently modified/rearranged by "other people", thus he could not issue Part P as it was no longer all his installation.
After much head scratching my mate suspects the "other people" are the tiler who did the underfloor heating underfloor heating moving the fused spur and controller from where the fitter initally installed it to somewhere move convenient and the plasterer when he replaced the ceiling rearranged/re-wired all the downlighters so that they illuminated the work surfaces better.
The tiler and plasterer were not employed by the kitchen fitting compamy but were by recommendation from friends.
So still no further forward.
Surely this is a major fault with Prat P that a suitably qualified electrician can come in do his finest certifiable work but not be able to issue Prat P as his work is subsequently modified by other trades in the course of their work.?