The Royal Marsden Cancer Hospitals in Sutton and Kensington are celebrating after raising over £20,000 last year.
Celebrities from Sir Paul McCartney, Dermot O’Leary and Ozzy Osborne donated their birthdays to the charity – urging people to donate to the hospital.
The initiative was part of the ten10 campaign launched at the start of 2013 by Prince William to mark its 10 year anniversary.
Black Sabbath singer Ozzy Osborne said: “I was delighted and honoured to support the donate your birthday campaign for The Royal Marsden Cancer Charity. It is a great charity to help and a cause close to my heart.”
Celebrities helped raise more than £2,000 and the initiative has raised over £20,000 so far.
Amanda Heaton, community fundraising and development manager, said: “The Royal Marsden Cancer Charity would like to say a big thank you to the all our supporters, including our fantastic celebrities, who donated their birthday.
“With their support we can continue to invest in world-class innovation at The Royal Marsden for the benefit of cancer patients everywhere.”