Hi misterg, take supply from room pendant, if wanted on with existing lights then connect to same terms as existing flex(unlikely),or if you want to put in local sw then connect to N + loop-in Lives at pendant & run to new sw. position, also loop from (new) light to light & take last cable to new sw. also.
At new sw. loop both BLUES (neutrals ) in term. block in sw. box, put live in to C in sw. & sw.Line out to lights in L1, earths together in term block,
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!