Andrew Heenan wrote:
Another clue: The site worked perfectly well with the previous MSIE, and
with Opera, FF and Chrome. And suddenyly, because IE8*beta* comes along,
and the site fails, it's TfL's fault?

Well, it does cause the W3C validator to get terribly confused when parsing
it:

http://tinyurl.com/6fsksz
aka
http://validator.w3.org/check?uri=ht...Inline&group=0

Theo