http://checkyourprice.co.uk/electrical-installation-cost/index.php
will give you most of the info you need, AND you can point the custards to it to justify your prices!!!
Regards
Most of these testers are very sensitive to static, you'll probably find if you hold the tester in one hand while keeping the other hand in contact with the wall fairly close by you will get sensible readings :)
I had one meaner than that! People had bought the house on the understanding the house had been rewired. When I started looking the tails in the skts/cu etc were recent pvc, but behind the boxes he had crimped to old v.rubber cables.
That house was sold by a Spark!!
I know you said don't want something as big as a transit....but mine (swb med roof 280/85) 5yrs old next week, never missed a beat, get 35+gal (I drive gently) got to be worth a thought!
Could be due to the thickness of the hob, you will prob be OK with 38mm w/top, but not with 27mm, as long as there is 8-10mm space between oven and hob it should be OK
Flameport you have obviously not found "hobrite",
Our ceramic is as clean as the day I fitted it near 9 years ago!
But to the OP, no you can't plug it in, it must have a dedicated radial circuit.