Same for me. As I recall, the University of London ran three enormous graduations a year, always in the Albert Hall. They had to be enormous because at that time everybody graduating from the following institutions was getting a U of L degree: UCL, KCL, Imperial, LSE, Birkbeck, SOAS, SSEES, Queen Mary, Royal Holloway, Bedford, Chelsea, Wye, Westfield, a dozen or more medical and dental schools, the Royal Veterinary College, the Institutes of Education, Pharmacy and probably several others, London School of Hygiene and Tropical Medicine, Heythrop College (theological college) and a lot of small postgraduate research institutions. Quite a few of those places no longer exist now in their own right as there was a huge reorganisation not long afterwards and many mergers/takeovers. There were also lots of students there from teacher training colleges whose degrees were validated by the U of L.
I went to the one in May the year after I graduated. Everyone who had earned a BA in one long line, everyone with a BSc, and so on. Within the block of those who had the same degree we were in alphabetical order of surname but not sorted by institution. The programme probably showed the subject studied but I don't think that was announced. I was sitting next to a woman who turned out to be the next door neighbour of one of my Mum's cousins who lived in Liverpool. One of my best coincidences.
I really enjoyed my graduation, but then my parents were absolutely glowing with pride. I was the first person to graduate in the entire extended family. (All the others in my generation also graduated in due course, I just happened to be the eldest.) When I worked as a university administrator years ago, I was drafted in to help with a graduation ceremony for several hundred nurses. It was an absolutely joyous occasion. Most of them were also the first in their families to graduate and there was a lot of cheering and whooping. Nobody sleeping!