World War Two veteran Captain Tom Moore, who has captured global attention for his fundraising efforts for the NHS, has now raised more than £26 million.
The 99-year-old initially pledged to raise £1,000 by completing 100 laps of his Bedfordshire garden by 30 April.
Walking with the aid of a frame he completed the laps on 16 April, and was met with a Guard of Honour from the 1st Battalion of the Yorkshire Regiment.
Mr Moore is raising money for NHS Charities Together, to thank the "magnificent" staff who recently treated him for a broken hip and cancer.
NHS worker Sonia Wilson has launched an online public petition, calling for the 99-year-old to be knighted, which has more than 835,000 signatures.
She said: "As an NHS midwife, I know how much his fundraising and support means on the ground. And how much it means to staff during this awful pandemic. He deserves to be knighted."
On Saturday, Robert Jenrick MP, Secretary of State for Housing, Communities and Local Government, announced the 99-year-old will help open the NHS Nightingale Hospital in Harrogate, Yorkshire on Tuesday 21 April.
Originally from Keighley, West Yorkshire, Mr Moore has recorded a duet with singer Michael Ball in a bid to raise even more money for the NHS.
'Captain Tom' has also received royal praise.
Prince Harry told the Declassified podcast: "I think what he’s done is utterly amazing. It’s not just what he’s done, it’s the reaction that people have had as well, I think is again just wonderfully British."
The Duke of Cambridge and Duchess of Cornwall have written to the Second World War Army veteran.
Prince William also made an undisclosed donation to the 99-year-old's appeal, Kensington Palace said.
The Prime Minister's spokesman said Boris Johnson will "certainly be looking at ways to recognise Tom's heroic efforts".
“From his military contributions to his support for NHS staff, Tom has demonstrated a lifetime of bravery and compassion," the spokesman added.
Captain Tom Moore with balloons outside his Bedfordshire home (Picture: PA).