Damn it! I've just looked plugged the route AndyC described into google maps and it looks fab. If things go to plan and I'm free in August this is another ride to add to the long list I wanna do. However, I couldn't find a perm version on the AUK website so I'd just have to DIY-it.
If you like that, adamski, you'll love the Lanchester 400 on 17th July. Rough plot on Google.
I've got the route plotted on http://bikeroutetoaster.com/Course.aspx?course=147101 - it may have a few errors....