A certain Charles Kennedy, as president of the GU students' union dragged the place into the modern age by campaigning to allow ladies into the GUU. In debate, I'm sure young Charles used coherent persuasive argument, but I only remember his opposite number shouting, "Yer all just a bunch of cli**y lickers!"
Back to trad pubs, I'm sure I've been in some that had no ladies toilet (not sure why I was looking for one), such as Skelton's at Hamilton's bottom cross. I'm not as old as you think though. I was probably under age