King Charles III arrived in Nassau, the Bahamas, on October 27, beginning an official visit to the Commonwealth nation. Upon landing at Lynden Pindling International Airport, he was formally welcomed by the Governor-General, Dame Cynthia Pratt, and Prime Minister Philip Davis. Earlier that day, the King had departed from Heathrow Airport in London, accompanied by Lord Benyon, the Lord Chamberlain.

In Nassau, the King attended a Youth Rally at Clifford Park on West Bay Street, where he was greeted by Deputy Prime Minister and Minister of Education, Science, and Technology Isaac Chester Cooper, and Minister of Youth and Sports Mario Bowleg. Escorting the King were Sandena Neely, Director of Youth at the Ministry of Youth, Sports, and Culture, and Education Officer Ramona Wells. During the event, His Majesty observed educational displays and cultural performances, including a parade featuring the Royal Bahamas Defence Force Rangers, Royal Bahamas Police Force Cadets, and National Youth Guards. The King accepted a salute from the Junior Armed Forces and addressed the assembled attendees. Key members of the royal party present included Sir Clive Alderton, Joshua Puls, Tobyn Andreae, Professor Charles Deakin, Major Benjamin Rigby, and Commander Dominic Rigby.

Meanwhile, in London, the Princess Royal conducted an Investiture ceremony at Windsor Castle. Additionally, by the King's command, Marshal of the Diplomatic Corps Alistair Harrison formally bid farewell to Colonel Christian Katsande, outgoing Ambassador of Zimbabwe to the United Kingdom, at Zimbabwe House.

In Finland, the Duke of Edinburgh participated in a series of engagements in Oulu. His morning included visits to the Tiima Museum and Science Centre and the Design Centre, followed by a lunch at Oulu City Hall. In the afternoon, he toured the Media Art Exhibition "Underground Clash" at the Kivisydän Civil Defence Shelter. Later, the Duke and Duchess of Edinburgh attended a dinner hosted by the President of Finland at the presidential residence in Helsinki.

The Duchess of Edinburgh also carried out a full schedule of engagements across Helsinki and the surrounding region. Her visits included a meeting with Suzanne Innes-Stubb, spouse of the Finnish President, at Ipi Kulmakuppila, a tour of Solar Foods in Vantaa, and a visit to Kalevala Jewellery’s factory store in Helsinki. In the afternoon, the Duchess attended a luncheon organized by the Crisis Management Initiative and the Martti Ahtisaari Peace Foundation focusing on women mediators and leadership at the Hilton Helsinki Kalastajatorppa. She concluded her day with visits to the Nokia headquarters in Espoo and Tove Jansson’s Atelier in Helsinki.

The Princess Royal, serving as Patron of Mercy Ships International, hosted a dinner at Windsor Castle to launch the Africa Mercy II Project on the evening of October 27.

In Cornwall, the Duchess of Gloucester officially opened the Garden of Peace at Tremenheere Sculpture Gardens in Gulval, where she was welcomed by Colonel Sir Edward Bolitho, Lord-Lieutenant of Cornwall. She later marked the 21st anniversary of the TR14ers Community Dance Charity at Camborne Wesley Methodist Church and inaugurated a new Cottage Cheese Production Facility at Rodda’s Creamery in Scorrier.

The Duke of Gloucester also met with senior medical officers, including Major General Timothy Hodgetts and Brigadier Huw Thomas, in his capacity as Colonel-in-Chief of the Royal Army Medical Service.