On Thursday, 27 October 2016 19:55:35 UTC+1, ARW wrote:
On Wed, 26 Oct 2016 23:59:53 +0100, pamela wrote:

https://pbs.twimg.com/media/CvtPqEOXYAEybSS.jpg

What's that very thin wire going from one or two fixings then
passing behind the floodlight? It looks like it continues into
the PVC window frame.


I also spotted that. Possibly an old BT earth cable. I don't think it
passes through the window.

No BT in Swanland - it is an old KC phone line not connected to the lighting job at all. Previous owners had a phone in each room and the garage too.