The pair were on hand to unveil a commemorative plaque which has been installed onto the front of the University of Westminster - formerly known as the Regent Street Polytechnic.
It was at the school that Waters, Mason and Richard Wright met as architecture students that soon began playing together; after some name and lineup changes, they teamed with guitarist Syd Barrett to form Pink Floyd in early 1965.
The commemorative plaque reads: "Pink Floyd. Between 1962-1966, Nick mason, Roger Waters and Richard Wright studied at the Regent Street Polytechnic where they formed the band."
"We are hugely gratified to be here and to have the plaque," said Waters. "It's an honor."
"Living as a student was a fantastic way to live," recalled Mason. "Although I'd like to see more government grants introduced. I spent my grant on curry, I think, mainly. But sensible people need the money in order to further their education and study."
"I spent mine on bass guitars," added Waters. "I used to be freezing in my dorms."
Longtime guitarist David Gilmour was not at the London ceremony on Thursday as he joined the group in December 1967 after their school years ended. Read more, check out photos from the event and news video - here.
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