I am looking for a list of approximately 10 Macrame experts with full
contact details based in the UK.

I do NOT want a simple list of craft sites which happen to sell
macrame items/patterns/books.

Instead, I am looking for real people based in the UK who actively do
macrame, have made a large number of things using macrame and are
experts in the craft of macrame.

Lovely stuff:)

Perhaps this site can help you, especially the link to International
Guild of Knot Tyers, but maybe there are other links that could point
you in the right direction, perhaps to recent books from the UK whose
authors are alive.

http://freehosting.tomaweb.com/ArtsAndCrafts/Macrame1.htm

This is a free comment, not an "answer" to your question, which only a
Reasearcher with a blue name can post.

Good luck, Myoarin