Here we look at who they are and their relationship to the late Duke of Edinburgh. Please note, there is one picture missing from this article - Prince Donatus, Landgrave of Hesse. Prince Donatus is the head of the House of Brabant. He is the grandnephew by marriage of Prince Philip. You can read the many tributes that were paid in Sussex to Prince Philip shortly after his death here.
1. Queen Elizabeth II
Wife of Prince Philip for 73 years. The Queen – like all 30 guests invited to the service – will wear a facemask and she will sit by herself. Photo: Ben Stansall - WPA Pool/Getty Images
Photo: Ben Stansall - WPA Pool/Getty Images
2. Prince Charles, the Prince of Wales
The eldest son of Queen Elizabeth and Prince Philip, the Duke of Edinburgh and next in line to the throne. Picture: Jeremy Selwyn - WPA Pool/Getty Images
Photo: Jeremy Selwyn - WPA Pool/Getty Images
3. Camilla, The Duchess of Cornwall
Wife to Prince Charles. The couple married in April 2005. Photo by Eddie Mulholland - WPA Pool/Getty Images
Photo: Eddie Mulholland - WPA Pool/Getty Images
4. Anne, The Princess Royal
The second child of Queen Elizabeth and Prince Philip and sister to Prince Charles, Prince Andrew and Prince Edward. Photo by Ben Birchall - WPA Pool/Getty Images
Photo: Ben Birchall - WPA Pool/Getty Images