I have been working on an older property the past couple of days,sorting out flickering downlighters,adding extra sockets and so-forth. I had to move a light switch in one room and on inspection of the ceiling rose found a host of lead cables......... oh dear....probably the whole d/stairs is like this! I am in the process of waiting for my half day assesment for NIC enrolment,which some of you might know,but on the recently new CU is a business label of an NIC approved sparks? who from what I gather just changed the CU (Have to ask owner if he got a cert for it,should have done) No lead cables are visible inside the CU but I did find a couple of VIR's tucked away While I was there,amazed they were in such good nick, still gave me 40megs on an insulation test! Being ripped out though whatever!