Mr Choo, who now runs his own optical networks business, completed his MSc in Computer Studies in 1991 and hasn’t been back to England since. As he explained: "Once I had completed my National Service, I didn’t have the money to come back to England.
"It is a privilege to be here now – to see how things have changed and to meet up with Professor Tsang, who taught me. He is the only member of teaching staff, who taught me, who is still around.
"I have very fond memories of being here and I am very grateful to the University for giving me the opportunity to come back. I wouldn’t have made the trip, if it wasn’t for today’s ceremony."
Keymir Orazov also graduated this year. He missed his original graduation as he was in Central Asia advising the United Nations Human Rights Council on ways of improving the plight of those classed as ‘stateless’ – where no country recognises them as citizens.
He graduated in International Human Rights Law in 2009 and continues to use his Essex training - he now runs his own business, based in Turkmenistan. He flew in especially for the graduation ceremony.
“It’s very strange to be here after all this time, but I am very happy,” he said.