just taken over a flat with no main lights ... only wall lights, and a rather large storecupboard has no lights at all, i wish to run a dedicated light from a spare in the metal consumer unit (with metal pipe coming out of it) in round plastic pipe and then adaptor to plastic trunking, do they make such a part, round to flat plastic, cant seem to find it anywhere. suppose i could at a push screw a junction box onto the wall, but would prefer the other idea, only small one bedroom flat.