In message , at 22:00:56 on Sat, 22 Dec
2012, The Real Doctor remarked:
"And standing" normally means at most one extra passenger per row of
seats, so 25% over capacity.

Mush more than that, you've forgotten the vestibules (although there
have been cases reported of Virgin clearing them) and people standing
next to non-seating areas like toilets and luggage racks. I've also
travelled sat in the luggage racks, and the area outside the disabled
tiolets is quite large.
--
Roland Perry