In message , at 11:34:57 on Wed, 22 Jul
2009, Roland Perry remarked:
"The Icknield Way used to form part of the boundary between
Hertfordshire and Cambridgeshire, and at one time Royston was cut in
two by this boundary."

And thinking of some more examples, the county boundary runs through the
centre of Chorleywood (Herts, and probably Bucks, from memory) and I've
been to one town in the USA where the state boundary (between Georgia
and Tennessee iirc) went through the middle (either along the fairly
small river it straddled, or possibly relocated a quarter of a mile
north on the Main Street). Now that's what I call a legislative
nightmare!
--
Roland Perry