Note it on the cert and put a label on the gas meter, you gotta cover all bases when you take responsibility for the installation, it's your name on the ticket if something went wrong
Re advising of no protective equipotential bonding, the GIUSP section 3.19 tells us to issue a Bonding Notice, so a separate notification sheet rather than writing it on the LGSR, also see TB 102
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Reply to the thread, titled "No earth bonding within 600mm of meter" which is posted in UK Plumbers Forums on Plumbers Forums.