It seems since the advent of 'Part P' that most electrical work done as DIY
will require testing / certification by a qualified electrician.

The Part P document contains copies of model forms (of Certification) which
contain the words, "........design, construction, inspection and testing of
the work."

Since DIY work will not have been designed or constructed by the qualified
electrician employed to do the final testing how extensive and thorough is
the testing likely to be?

And what would be a fair and reasonable cost for such testing? (West
Midlands).

Any advice or information from anybody with experience of this new minefield
very welcome!

Tia,

Cic.