It's explained in detail with maps by the BBC on their "In Depth" and
"In Detail" pages; the bus event is described at
http://news.bbc.co.uk/1/shared/spl/h.../html/tavistoc
k.stm. The "In Depth" stuff starts at
http://news.bbc.co.uk/1/hi/in_depth/...ions/default.s
tm, linked from the front page at http://news.bbc.co.uk/.

Sam


Ah. Tar. Didn't see that before.