I went to college for a semester at the Univ of London in the 1970s. I was shocked when I went to the student cafeteria and found that one could buy beer! Not only could one buy it, but there were plenty of people drinking it - in the middle of the day!
In the mid-60's normal pub hours in Liverpool were 12:00 to 3:00 at lunchtime (yes... quaint drinking hours rules)
But the University Student Union cafeteria/bar had to close at 2:00 so students would get to their afternoon classes....:^) No-one left 'til the bar closed...