Sir Nicholas Winton organised the rescue of 669 mainly Jewish children by train from Prague in 1939.
The founder of the Czech Kindertransport operation was given a birthday cake and card at his home in Maidenhead by newsreader Natasha Kaplinsky, who is a member of the Prime Minister's Holocaust Commission which is investigating the UK's role in this period of history.
She said: "We owe much to Sir Nicholas who worked so selflessly to save so many.
"His remarkable legacy is the hundreds of orphans, and children of parents forced to make a desperate choice, who survived as a result of his actions.
"Happy birthday Sir Nicholas."
He was also visited by Vera Schaufeld, who was one of the children he saved.
Sir Nicholas received a Hero of the Holocaust medal at Downing Street in 2010.
Prime Minister David Cameron said: "At the age of only 29, Nicholas Winton showed extraordinary courage, doing whatever it took at the time to rescue over 600 children.
"I am proud to be Prime Minister of a country with people like Sir Nicholas in it. I wish him a very happy birthday."