If it wasn't for the completely stupid regulations Paul wouldn't need to pay anyone anything. That's what's so frustrating. He probably would need to buy an insulation tester off ebay for GBP 35 (that's what I did). But now he can test again when making later changes, or in another house, and so on, or flog it on when done. Paul, just try doing the work, writing it up carefully, filling in a BS7671 form and sending it in to the local BC and dare them to charge you extra for checking. If they try, point them to the govt circular telling them not to (referenced here in discussions passim). Only if all that fails would I resort to actually paying for the completely unecessary sparky.
And whilst you are at it write to your MP about the complete idiocy of it all. This lot might be a bit more receptive than the last lot to the idea that there is such a thing as excessive bureaucracy, a corrosive lack of trust, and unecessary red tape costing everyone (except the ignorant and the thoroughly bolshy) a fortune.
Wookey,
Interestingly Birmingham City Council's website quotes a flat rate of £75 for the Building Control approval of BS7671 electrical work.
Cheltenham Council on the phone said their charge was £250, but made no mention of BS7671.
Gloucester Council charged £50 for the electrical part of for my solar thermal install - I ticked the box that I would wire up the controller to BS7671.
However since that they now say "get a Part P electrician" and don't quote any prices for BC electrical work on their website.
-Paul