Pauluk,
Er......my thoughts exactly.
The wiring is not entirely new as this is a dormer extension. There was plenty of opportunity with the floorboards being up to run a new cable back to the nearest socket to continue the ring main.
I was told that cables are supposed to be put in conduit in 3 x 2 studded walls but this might just be BS.
This bodger is a registered electrician in the UK and this sort of thing just makes a mockery out of all the regs and qualifications.
Me I'm just a lowly carpenter but I would NEVER consider doing something like this.
Truth is he is just another one of the lazy don't give a toss blokes I see all the time. Too idle to cut a 4" hole in a piece of plasterboard for an extractor fan. As for cutting slots in the FACE of the studding for the cable.........well I just told him where to go..........NO WAY
Dave