Insulation and Wires?

[halo34]

Shortly due to get a green survey - but the loft has been converted.

I had a crawl around yesterday and the bigger areas have insulation. But running along the length of the house is a crawl space, which has very little insulation (not sure why I didn't check before).

By the looks of it there isn't much between floors either.

So I guess I need to leave breathing space at the edges of the roof for circulation. But how do I deal with the fact the wiring up there runs over the beams without any slack to move it out of the way?

Advice seems to be not to cover it...

Also any good products I could push between the floors to help?