Only discovered the H1 forum today. Our Henley Lexington Q1 reached Lock-Up on 23 December 2010. Will post some updates here, including after we move in.
Some Blog Posts on progress up until now are on my consulting blog at ...
Post 1 - Ready and Waiting
http://veridiansm.com/2010/10/12/house-construction-diary-p1/
Post 2 - Earth Moving Action
http://veridiansm.com/2010/11/15/homebuild2/
Post 3 - Base and Frame
http://veridiansm.com/2010/11/30/homebuildthree/
Post 4 - Roof and Bricks
http://veridiansm.com/2010/12/20/homebuildfour/
Also happy to answer any questions if I can help. So far so good with our own experience with Henley.