Sorry, have I misunderstood? [Linked Image]

Quote
When the new Standard comes in, if you show up at a customers house, you are required to protect all of the circuits in the house, bar the Range and the Water Heater(Leakage Currents), with an RCD

I took this to mean that when your new rules come in you will required to RCD protect all circuits no matter what work you're doing there.