Re Loop in at switch.
I am an electrical contractor in Inverness, North Scotland.
Up here the standard method of wiring lighting circuits in new domestic installations is to loop at the switch ie. feed in, feed out, switch wire to light all taken to the switch position (T&E cable), neutral wires connected within the mounting box in a strip connector.
This method works well here as most new construction is timber frame, or walls are strapped & lined with plasterboard enabling the use of 35mm deep boxes.
You will really appreciate this system if you have to install decorative light fittings, with only 1 cable to connect & no permanent live to terminate.
