Back in the days of non-gangway compartment stock, didn't there use to be "Ladies only" compartments? Non-gangway and non-corridor compartments were on their way out by the late 1960s. I wonder when the last "Ladies only" compartment was removed. It's likely to have been against sex discrimination legislation, which was already up and running in the 1970s.
There was a murder on one of these trains on 23rd March 1988 on a train coming into Victoria.
From Wikipedia
"...Debbie Linsley, 26, from Bromley was found dead in a carriage at Victoria station. She had multiple stab wounds to the heart. The case was reopened in 2002 but no-one has so far been arrested. She lived and worked in Edinburgh and had been visiting her parents and brother Gordon. She got on the 14:16 train in an old-fashioned compartment from Orpington to London Victoria at Petts Wood. Screams were heard between Brixton and Victoria. The killer left traces of his blood at the scene but the murder weapon was not found. There is a £20,000 reward for information....."
Afterwards, red stripes were put above these carriages to identify them before the rolling stock could be withdrawn.
I re-iterate my earlier point that having women only carriages would enable undesirables to know exactly where women were travelling.
If you were a woman travelling alone, where would you feel safer - in a women only carriage with no-one else, where anyone could get on or come through at any moment, or in a carriage with other people.
Another point which Jeremy Corbyn has (unsurprisingly) forgotten to consider is what do you do if you are a man and you need to pass through a women only carriage to get to the toilet.
And then what about stations with short platforms..?