The Princess of Wales’s brother James Middleton has paid tribute to his sister, sharing a picture of the two of them together as children on Instagram.

“Over the years, we have climbed many mountains together. As a family, we will climb this one with you too,” he wrote on the social media site.

This breaking news story is being updated and more details will be published shortly.

Please refresh the page for the fullest version.

You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow @SkyNews on X or subscribe to our YouTube channel to keep up with the latest news.