The King leaves on Tuesday for the most politically exposed journey of his reign so far. Between 27 October and 4 November he will visit the Bahamas, Guyana and Antigua and Barbuda, and attend the Commonwealth Heads of Government Meeting. Buckingham Palace says the programme will turn on the environment, biodiversity, community resilience, young people and the Commonwealth. The politics waiting for him are older than any of those themes.

Queen Camilla will travel for the Antigua and Barbuda leg, including CHOGM, and for engagements of her own on literacy and on ending violence against women and girls. She will not do the full nine days. Palace officials have long accepted that the pace and heat of some tours are hard on her. She will be 80 next July. The King, approaching his 78th birthday and still receiving treatment for cancer, has about 36 engagements in nine days. The Palace has repeated that he is on a "positive trajectory".

Guyana first in the diary that is public

The most fully published stop is Guyana, where the King arrives on Thursday for two days, 26 years after his last visit, as Prince of Wales, in February 2000. He comes at the invitation of President Irfaan Ali and at the request of the British government. The visit marks 60 years of diplomatic relations.

He is due to meet the president at State House and then join a garden reception for communities from across the country. As patron of the Commonwealth War Graves Commission he will honour British, Guyanese and Commonwealth dead at the memorial on Rabbit Walk in Georgetown, and meet the elected leaders of the National Toshaos Council. At the botanical garden he will see municipal conservation work and meet young people from environmental clubs. On Friday there is a reception with British and local business, a briefing on the Iwokrama rainforest centre during the Global Biodiversity Alliance conference, and a last stop on the Georgetown seawall, where mangroves are being restored and a Commonwealth sustainable-cities dialogue is under way.

The Autumn Tour

  • Tuesday 27 October to Wednesday 4 November: the Bahamas, Guyana, and Antigua and Barbuda.
  • The King visits all three. The Queen joins him for Antigua and Barbuda and for CHOGM.
  • Guyana: Thursday 29 and Friday 30 October, a state visit marking 60 years of relations.
  • Themes set by the Palace: environment, biodiversity, community, youth, the Commonwealth.
  • The King is still in cancer treatment. The Palace says his trajectory is positive.

Reparations, and the risk

The BBC has described the tour as potentially the greatest risk of his reign, and also the greatest chance for him to show the empathy his supporters say is his strongest public quality. Caribbean governments and campaigners have spent the past two years pressing Britain for an apology and for reparations linked to slavery. Questions about whether the Crown still belongs at the centre of these countries' constitutions will travel with the motorcades. A tour built around mangroves and young volunteers will be heard, in part, as an answer to that demand, whether or not the King uses the word.

A transatlantic flight, three countries and about 36 engagements, close to a 78th birthday, with treatment still part of the week: the diary is the story as much as the speeches.

It is a sharp change of register from last week, when the King, the Queen and the Prince of Wales stood in the Aberfan memorial garden. That was a domestic act of remembrance, 60 years after the disaster, on ground the family knows. This is a Commonwealth test, in public, in heat, with a political argument the Palace cannot choreograph. The last state visit on British soil, the Sultan of Oman's days at Windsor, was ceremony the Crown still does with ease. Tuesday's flight is the harder craft.

Royal Family Aberfan Oman State Visit State Visits