The Royal family were in force at the first garden party at the Palace, while the Company nevertheless continued with its normal business Prince Harry's British journey.
Dressed in top hat and tails, the monarch laughed and chatted with some of the 8,000 guests, just 24 hours after it was confirmed he would not meet his son despite the couple's closeness.
He was joined in the spring sunshine by the Queen, the Duke and Duchess of Edinburgh, Princess Anne and the Duke and Duchess of Gloucester, while Prince William hosted an investiture ceremony at Windsor Castle.
The only missing royal members were the Prince and Princess of Wales. William had held an investiture at Windsor Castle earlier in the day, while Kate is away from public duties as she undergoes chemotherapy.
It marked a clear show of solidarity for the 75-year-old king, who returned to public duties last week for the first time since his cancer diagnosis.
Wearing his military medals and a star around his neck, marking him as the Knight Commander of the Royal Victorian Order, Harry waved to the crowd before greeting the Dean of St Paul's, the Very Revd Andrew Tremlett, at the top of the stairs. . The 1,000-strong congregation included Princess Diana's siblings, Lady Jane Fellowes and Earl Spencer, and former army officer Mark Dyer, who acted as the Duke's mentor and played the role of a supportive big brother to Harry after the death of Diana. His lawyer David Sherborne, who has represented Harry in a number of media lawsuits, was also present.
(Image: GETTY)