More holes in that report than my socks, and also similar to my socks I smell a rat. A new 10yr old domestic that's TN-S and a copper water service - in a flat?? I especially like the testing of an AFDD as being satisfactory given that there won't be any from ten years ago!!
I would a) not pay for it and b) ask Napit to attend and verify the findings. It's the only way to stamp out this ridiculous nonsense of rogue inspections that is sweeping the land.
tbf I have seen a relatively new build block with what appeared to be TN-S, but that was because there was a BNO involved.
In this case, with a Ze (or Zdb) of 0.12, that's clearly not the case though.
There may be copper pipes within the block to each flat, but even if the main incomer was not plastic, the bonding should be done for the block not each flat.
Wouldn't be surprised if the house builder just stuck bonding in every flat regardless then anyway, whether needed or not, because someone thought it was needed...
I have seen flats with 2 core SWA for the feed in 10mm, and then a separate 16mm earth, so that is just possible, if unusual...
Would be interesting to see the original EIC, but I wouldn't mind betting it doesn't exist any more and was never handed over with the flat...
Still leaves plenty of holes in the report though...
Couple more for the list:
the test schedule suggests this is fed from an 80A Type B 60898 MCB - Not sure if those even exist. Many flats I've seen have an isolator in a riser cupboard, but never seen higher than 63A.
Phase sequence is apparently confirmed....for a single phase system 🤦♂️
The schedule says "associated RCD - N/A" - then gives test readings for it tripping - which are different from either of the actual ones on the dual RCD board.
Main switch BS 60947-3 apparently has a fuse rating of 80A (as well as a current rating) - Wylex do seem to make some interesting kit!
RCDs are apparently providing fault protection (SO many people get this one wrong on certs)
Finally, the chances of the inspector actually testing all L/N circuits at 500V and getting perfect (>200) readings unless the flat is completely empty with every appliance removed, are about as high as this country having a functioning electrical competency scheme in place any time soon!
But it's fine, because this report was done by a "Senior Electric Inspector"