Yep, I'm still re-wiring the house.
My lounge shares an internal wall with the hall. To save on chasing out for new light switch cables, is it allowable to share a chase on just one side of the wall with light switches for both rooms? That is, it will be easy for me to chase the hall wall for its light switch, but it would be great to be able to use that chase for the cable for the lounge light switch too, which is directly on the other side of the wall. Ta, as always.