Went with STROMA today. Great guy, put me at ease. A fairly thorough process. About fifty question, 20% building regs the rest scientific principles and regs etc. Lots of documents flying about. Complaints procedure, Method statement, Qualifications at level 3, Risk assessments (just a couple) took 2 hours then off to site. Asked to do Ze, Zs and full RCD trip test plus inspecting earth conductor (size, termination etc.) and main services bonding. Safe isolation observation. That was it really. A bit intense on the paperwork etc. As I was only applying for domestic installer I was surprised they asked me about EICR on the tech questions as I wasnt asking for condition reporting. But as it happens I had just done 300 pages of commercial EICR and just flopped them on the table which when he briefly glimpsed over them put that one to bed. Just a bit odd though ! All in all not bad at all.