I think this is wrong, thoughts please

[Billsays]

Hi guys, been doing more testing and reporting on small blocks of flats and came across this scenario.

Block is PME with a small intake at the bottom containing most of the meters. The sub-mains/laterals then run through pvc conduit to the ccus in the flats where there is an Henly block making the PME connection. I think this is wrong as any fault current would have to go through the meter. What's your thoughts?
Pix below...

 

[Rosco]

Are these properties in central London as I have seen some with a similar set up around the Southwark tube station area?

 

[Risteard]

Essentially what you have there are PEN/CNE conductors within the installation. Presumably this is within the BNO network, although without DNO authorisation there is almost certainly a breach of ESQCR there.