William and Kate thank funeral volunteers in Windsor

The Prince and Princess of Wales are meeting volunteers and staff who helped with the Queen's committal service. Crowds gathered outside Windsor Guildhall to see Prince

William and Catherine in their first appearance since the Queen was laid to rest at Windsor Castle on Monday. Thousands of people lined the streets of Windsor to see the

Queen's hearse arrive at the castle for the service. The Royal Family is still observing an extended period of mourning. The prince and princess thanked volunteers

and staff for supporting the large crowds that gathered on the Long Walk to watch the procession of the Queen's coffin on her last journey to the castle. On Monday, the

nation paid tribute to Queen Elizabeth II - Britain's longest reigning monarch - at a state funeral service at Westminster Abbey in London and the committal service at St George's

Chapel in Windsor. The Queen was then laid to rest in a private burial service alongside her husband the late Duke of Edinburgh. Who is in the UK Royal Family and

what does the King do? The walkabout comes after Prince William spoke of his late grandmother in a video released on Wednesday to promote the environmental competition he

founded, the Earthshot Prize. In the virtual message broadcast to people gathered for an Earthshot summit in New York, he said: "During this time of grief, I take great

comfort in your continued enthusiasm, optimism and commitment to the Earthshot Prize and what we are trying to achieve. "Protecting the environment was a cause close to my

grandmother's heart. And I know she would have been delighted to hear about this event."