Identical twins Sidney Tabizel and Harry Tobias celebrated their 90th birthday with a surprise afternoon tea party on Sunday.
They were joined at the Royal Chace Hotel in Enfield, North London, by 75 family members spanning four generations.
"It was a surprise to see everyone there," said Harry. "They were all asking what the secret to a long life is."
The answer, he said, is "clean living" and to "keep taking the tablets".
He added: "I have had a few medical conditions, but they have not stopped me. I do not feel any different to when I was 89."