Both the Prince of Wales and the Duke of Sussex will take part in a ceremony paying tribute to their late mother at the Diana Legacy Award.

William will attend the event at the Science Museum in London on Thursday night in person, where he is expected to give a speech to mark the charity’s 25th anniversary and present awards to 20 recipients.

Harry will then join a video call with the winners, according to reports. However, his involvement will only take place after William has left the ceremony.

The Diana Award was set up to promote the princess’s belief that young people have the power to change the world for the better.

Dr Tessy Ojo, chief executive of the Diana Award, told The Times: “It’s a privilege to have the support of both the Prince of Wales and the Duke of Sussex — particularly as we mark our 25th anniversary year.”

While a spokesman for the award told The Telegraph that Harry will be a “key part” of the celebration.

“He is scheduled to speak with the award recipients, virtually, on the evening of the awards to celebrate their accomplishments,” he said.