Prince Harry was snapped stepping out in London as he marked the 10th anniversary of the Invictus Games.
The Duke of Sussex, 38, was wearing a grey suit, with a white shirt and black shoes.
The father-of-two, who was last in the UK in February to visit King Charles shortly after his cancer diagnosis, returned to London ahead of yet another edition of the competition for wounded and injured servicemen and women.
A spokesperson for Prince Harry told GB News: "In response to the many inquiries and continued speculation on whether or not the Duke will meet with his father while in the UK this week, it unfortunately will not be possible due to His Majesty’s full programme.
Prince Harry steps out in London as he marks 10th anniversary of Invictus Games
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Prince Harry confirmed he will not meet the King
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"The Duke of course is understanding of his father’s diary of commitments and various other priorities and hopes to see him soon."
Despite jetting to London from Montecito, the Duke of Sussex will not see his father during his visit.
Buckingham Palace has decided not to comment on Prince Harry's appearance in London.
Harry will undertake multiple Invictus Games-related engagements today.
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Harry is scheduled to give a reading at St Paul's Cathedral
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He is scheduled to give a reading at St Paul's Cathedral on Wednesday.
However, no senior members of the Royal Family are expected to attend the event tomorrow.
The Duke of Sussex founded the sporting competition in 2014 when he was still a working member of the Royal Family.
Prince Harry is expected to be in the UK for just a few days before flying to Nigeria for an unofficial royal tour alongside his wife Meghan Markle later this month.
The Duke of Sussex founded the sporting competition in 2014
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Dominic Reid OBE, CEO, Invictus Games Foundation and Prince Harry, The Duke of Sussex, Patron of the Invictus Games Foundation
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The Duchess of Sussex, who did not join the Prince at the Invictus event, will fly from the US to Nigeria to carry out multiple engagements alongside her husband.
Harry's arrival in London came just days after King Charles returned to public-facing duties last week as he visited a cancer centre alongside Queen Camilla.
The engagement was the King's first public-facing duty since being diagnosed with cancer earlier this year.
The King is still receiving treatment for his cancer and confirmed during his engagement last Tuesday that he had treatment scheduled for later that day.
