In message , Paul
Scott writes

There is no first class on the Windsor service though,. The first class
sections are declassified, and usually quite empty, because the majority of
passengers don't realise this.

Ah yes, you're right - but I think Reading trains on the same line still
have first class (thus adding yet further to the confusion, since if you
get on somewhere like Richmond you don't tend to think about whether the
train started from Reading or Windsor).

--
Paul Terry