I've got his book about modern megaliths in which he explores modern things built using traditional and modern technologies. It's alright actually...

http://www.amazon.co.uk/Stone-Circles-Builders-Megalithic-Revival/dp/1890132039/ref=sr_1_1?ie=UTF8&s=gateway&qid=1202381987&sr=8-1

Bit new-agey in places but he talks to a fair few folks in the UK. When it arrived and I initially looked at it I was dissapointed, but then got quite into it. There seem to be 2nd hand copies for £2 on amazon...