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the PoCo supply us with a double pole 100A isolator (on single phase supplies)
East Midlands Electricity were doing that when I left their region a few years ago, but down here in former Eastern Electricity region they still don't provide isolators. You provide the tails for them to connect to the meter, and if you want a separate isolator then it's your responsibility to provide one.

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with privitisation of the local supply companies that went out the window in favour of cheaper working practices against safety.
That about sums it up: As in so many other fields, it's now the bean counters who are in charge.

Remember how fussy the PoCo used to be about testing a PME system? Not anymore, at least not in this area. They just shove the earthing lead into the neutral block and that's that. Not even a visual inspection to see if the other bonding is up to scratch. [Linked Image]