Hi Folks, I am Gill Turley and I've just been reading this posting with interest.
The book mentioned is edited by Rosemary Wilkinson (published by New Holland) but there were six of us quilters from the U.K. who wrote a chapter each and made the quilts for our chapters. The red and blue tied quilt on the front of the cover with the equilateral triangles is mine and yes it is tied. Some of my quilts were machine quilted and some hand quilted. There are other books in this series. The first was "Quick Quilt to make in Weekend"
I hope this posting helps.