Princess Diana memorial

William and Harry visit new Diana memorial

The pair were accompanied on Wednesday afternoon by Prince William's wife, Catherine, the Duchess of Cambridge, as they toured what had been known as the Sunken Garden at Kensington Palace in London, to mark two decades on from the death of their mother Diana, Princess of Wales.

"The engagement will allow the Princes to pay tribute to the life and work of their mother the day before the twentieth anniversary of her death," an earlier statement from Kensington Palace said.

William and Harry visit Princess Diana memorial

The White Garden, at Kensington Palace, was planted to mark 20 years since Princess Diana died in a car crash.

The Duchess of Cambridge joined the princes on the garden tour.

A spokeswoman for Kensington Palace said: "The engagement will allow the princes to pay tribute to the life and work of their mother."

They met representatives from the causes and charities supported by Diana, including the Royal Marsden and Great Ormond Street hospitals, the National Aids Trust, Centrepoint youth homelessness charity and the Leprosy Mission.