Youtube is interesting and very disturbing. I have been watching a number of EICR videos, and it seems that some of the people making the videos do not understand that an EICR is a report on the condition strictly to BS7671, not an invitation to get remedial works. One video starts with something like "I don't like the look of that" and has hardly started when the "Inspector" decides that a rewire is necessary. There are a few problems, but he does not even finish the inspection or any testing before the installation is condemned. In reality, the faults can be easily rectified. He does not even realise that a flat in a highrise does not require main bonding locally or that this should be present at the services inlet to the building, which he does not check. There may be supplementary bonding at this point at the whim of the installer, but main bonding high in the air, would be very difficult and probably need a very large cable. It is a good self-test to watch and check the inspection is right, for example, the CU sides and bottom are IP2x, so may allow entry of a BS standard finger, although it should not be able to contact any live parts. In many cases, it appears that producing an accurate report is the last thing on the inspector's mind, but reparations are top of the list.
I did not say that UKPN, I said it should not be in the flat, because the metering is at the intake position, along with the incoming extraneous conductive pipes and this is the position for MAIN protective bonding, 544.1.2. Inside the building, these distributed services may have supplementary bonding.