Sorry new to all this... No have no photo of the back of the CU did not want to touch it too much in case I was blamed for anything theres only been visual inspection of the work could not look at the sockets because all have been sealed all the way round with mastic but the one switch i could open was the kitchen light switch that came out approx 14" which i found odd they also used to have at least a bit of sheathing showing what cable was what but both are brown, maybe all the reg's have changed no bonding even needed to the bath or kitchen sink either apparently, theres earth cable all unclipped in the bathroom you can trip up it 10" it comes out from the skirting just awful never seen work like it, they just wound the cable up stuck it in behind the bathroom radiator, doesn't take much to put a few clips in even the bath baton work is not fixed they have used mastic, all this was supposed to be complete new fitting! Cheers you really have all helped out really appreciate it look out for a new thread in the contactors builders section DECENT HOMES FROM HELL i'll put some photos up of the other work apparently from builders of the year 2 years running,