The Duke and Duchess of Cambridge and Prince Harry have arrived at Warner Brothers Studios in Leavesden.

The royals arrived at the £100 million studios – where all eight Harry Potter films were made – at around 10.30am. There they were met by local dignitaries and Harry Potter author J K Rowling.

Kate was wearing a black tailored jacket over a £38 Topshop dress while William and Harry both wore dark suits with blue ties.