The news of the meeting had originally sparked rumours that either the Queen or her husband had been taken ill, despite a spokesperson confirming the meeting was "no cause for alarm" ahead of the announcement. From July 1939 he began to correspond with the then 13-year-old Princess Elizabeth, who was his distant cousin, whom he had met for the first time in 1934.
"I can't stand up much", quipped the prince, whose off-the-cuff remarks have sometimes landed him in hot water.
He seemed to be in good health and a fine mood Wednesday during an appearance at a London cricket club where he joked about being the world's most experienced person when it comes to unveiling plaques.
The Duke of Edinburgh, has suffered from heart disease and other ailments in recent years but has nonetheless maintained a vigorous public schedule.
Buckingham Palace said in their statement: "His Royal Highness The Duke of Edinburgh has decided that he will no longer carry out public engagements from the autumn of this year".
Prime Minister Theresa May said Prince Philip had given "steadfast support" to the Queen and served the country in a way which would be "of huge benefit to us all for years to come".
Prince Philip will attend previously scheduled engagements until August, "both individually and accompanying the queen", the palace statement said.
"Thereafter, the Duke will not be accepting new invitations for visits and engagements, although he may still choose to attend certain public events from time to time", it continued.
It was after the war that he was given permission to marry Queen Elizabeth, before which, he abandoned his Greek and Danish royal titles to became a naturalised British subject, taking on his paternal grandfather's surname of "Mountbatten".
They married in 1947 and will celebrate their 70th wedding anniversary on November 20. Queen Elizabeth II will continue to fulfill all of her engagements as Queen.
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Prince Philip spent 110 days a year ago making official engagements, the BBC reported, makng him the fifth busiest member of the royal family. Her heir apparent, Prince Charles, is already 68 years old.
The prince leads or is a member of 780 organizations, though Buckingham Palace said Thursday he "will no longer play an active role".
His 219 engagements a year ago were made up of 101 official visits, 91 receptions and 21 other engagements.
They were all carried out in Britain as Queen Elizabeth and the duke have cut down their overseas travel.
They visited Germany and Malta in 2015 but have not left Europe since touring Australia in 2011.
"I reckon I've done my bit", Prince Philip said.
On behalf of the Canadian government, Prime Minister Justin Trudeau thanked him for his decades of service and wished him "all the best in his retirement".
After 65 years by the Queen's side, Prince Philip, 95, has attended thousands of public engagements over the years.
"I'm a great fan of his and I think everybody appreciates what a wonderful consort he is and it'll continue in that way".