The Prince of Wales and Duchess of Cornwall came to Southwark Cathedral on Monday to attend a memorial service for murdered South African historian David Rattray.
David Rattray, a personal friend of the Prince of Wales, was murdered at his home in South Africa in January.
The Prince of Wales and Prince Harry spent a holiday at Rattray's home in 1997 after the death of Diana, Princess of Wales
David Rattray and his wife Nicky were guests at the wedding of Prince Charles and Camilla Parker-Bowles in 2005.
The service was also attended by Viscount Linley. A tribute was given by Prince Mangosuthu Buthelezi on behalf of the Zulu and South African people.
Southwark Cathedral has hosted a number of visits from senior members of the Royal Family over the past 12 months. The Queen, the Duke of Edinburgh, the Duke of York, the Princess Royal and Princess Alexandra have all attended services at the Cathedral in recent months.