One round my local town, Chelmsford in Essex…
http://www.gmap-pedometer.com/?r=4435600
Tight, narrow and twisty in places…fast in others. I reckon the section on the top right (Sandford Road) would be quite interesting taken at speed. Double run up to the roundabout hairpin could also be removed to make a quicker run down to the Army & Navy roundabout. Circuit is clockwise in my mind as well, plus a lot of places for some different photos :)