I have a little confusion over MWC's.
Currently we are adding a lot of smoke detectors to rental properties due to the change in the law around HMO licenses. Often its just upgrading from a D LD1 to a D LD2 system type. On smaller properties its just taking permanent feed off a local lighting fixture and putting a smoke detector in the living area, which is usually being used as a bedroom. And then wiring to smoke detectors in all the bedrooms upstairs from the exsisting one on landing via loft.
When completing MWC's for this above work its is necessary to perform R1+R2 for every fixture on the lighting circuit? A lot of these places have 1 lighting circuit feeding both floors so performing R1+R2 at every point takes a while and all I'm doing is adding 1 smoke detector. Would it be acceptable to confirm R1+R2 at my new smoke detector and the fixture immediately after, as I have not done anything that will affect the circuit beyond this.
Edit: A word