I am no expert on the regulations but wondered whether the sixth item is that the main equipotential bonding is done remote from the cutout location.
The according to the book ‘rule abiding‘ installation should have the earth conductor from the incoming N in the cutout going only a short distance to the main earth terminal bar, and then from this bar runs a cpc conductor to the dist boards, and separate EP bonding conductors for say water and gas connected also to the bar as in this figure.
With this scheme the cpc wiring and EP wiring do not share one conductor which might be considered a possible single point of failure. Just musing….
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