Can I get back to the question about 16th edition testers? Tony are you talking Insulation Resistance and if so we all know that anything under 2 M Ohms needs to be investigated no matter what the regs say. Which lets face it all 16th edition testers can already do, so is this just another way to extract money from over regulated electricians.
I would also like to rant about kitchen fitters/plumbers why is is that Part P for them is a quick and easy course and for us sparks a long drawn out process and they work in special locations !!!! My landlord recently had a new condensing boiler and gas central heating installed in my flat, when I opened the door to let these two children in to install it and left for work I felt quite worried but gave them the benefit of the doubt. On returning the little blighters had unplugged my stereo out of the double socket in the kitchen and just plugged the boiler in, no spur, no cable clips, nothing nada.
Part P part timers get on my wick, If I had done that for the plumbers I work for they would have had a mini fit.