I am sure the answer I had before was that it was ok to put a choc box
connection in the existing light wiring and take a lead to the new
location (about 2 metres max)
The idea is I can do this from the room below as I am trying to avoid
going in to the attic and wrestling with the insulation and it will be
in a cramped location with no flooring.

Question:
When I feed the `new` cable along to the new location it will
effectively be under the insulation, will this be ok?