When I was doing my 2391 inspection and testing there were satellite vans everywhere up the college as my instructor told me they must have the 17th edition as their making alterations to existing circuits.

As this is only considered minor works,the only thing the sat man needs to do is fill in a minor works certificate which is very basic testing of a few resistances etc, although I very much doubt any of them do!!!

A quick tip I learnt on inspection and testing was that very often when you test an upstairs lighting circuit,even though you disconnect all the bulbs you often get about a 13ohm resistance which means that someones tapped into the circuit to power guess what?an aerial booster!!!how many of them get blown when the tester shoves 500volts through em!!!!