Like almost every Zone diagrams online, that one is horribly wrong.
This one is correct and also has text from the regs: https://www.lightfixation.co.uk/n/n7/knowing-bathroom-lighting-standards
Hah yes, there did seem to be a bit of variance in them. Ta.
@Howard started
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Like almost every Zone diagrams online, that one is horribly wrong.
This one is correct and also has text from the regs:
https://www.lightfixation.co.uk/n/n7/knowing-bathroom-lighting-standards