In message , at
10:46:16 on Tue, 27 Aug 2013, DRH remarked:
keep the staff at arms
length. It's not a modern thing - iirc ICI used to have three different
'staff canteens' for different grades of staff (a generation ago).

And then there were the famous lavatories at London Transport (55 Broadway) for the three sexes ... Men, Women and Officers.

It's ingrained from an early age. Most schools have different toilets
for staff and pupils, and even some FE colleges I've been to.
--
Roland Perry