Interesting that Dave Yates came up as a topic recently. Here is his web page:
http://www.daveyatescycles.co.uk/
His shop is now in Lincolnshire.
I own, ride, and love my Dave Yates Super Randonneur, which I bought second hand last year. Here are some links to a photo of the bike in 'action' on last year's Santa Rosa 600km brevet:
(In order, front, side, and rear)
http://www.bill-king.net/
All photos enlarge if you want to scan the details.
The frame/fork is a mix of tubing: 531 for the fork, 631 main tubes and 725 rear stays. The frame is lugged of course.
While I said I love the bike, it wasn't custom made for me and I would (and will) do some things differently if (when) I had (have) a custom frame made for randonneuring.
I hope to be putting up a web page of detailed photos of this and all my other bikes.
rob hawks
richmond, ca