Prince William opens up on his 'time of grief' and the cause close to his grandmother's heart that has given him 'comfort'

Prince William opened up about his 'grief' in a recent video about as he touched on the Queen's recent passing in his opening speech.

• Prince William is the President and Founder of The Earthshot Prize, and environmental award that's searching for sustainable solutions to ecological issues.
• The Prince addressed The Earthshot Prize Innovation Summit in a prerecorded video message.
• In other royal news, How the Queen's sentimental words before her death cemented her pure dedication to the Crown.

In the prerecorded video message to the Innovation Summit, the Prince of Wales addressed the death of Her Majesty the Queen as he spoke briefly about his 'grief' and the 'saddest' circumstances that prevented him from attending the summit.

In the speech, Prince William said, "Although it is the  saddest of circumstances that means I cannot join you in person today, I am pleased to be able to join you in video form."

The Prince then spoke about the mourning period that is still being maintained by the Royal Family as he revealed that there is one small comfort that he has found during this difficult time.

"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," said the Prince.

The Prince then spoke about the Queen directly as he said, "Protecting the environment was a cause close to my grandmother's heart." The Prince then added that he felt she would have been pleased to see the work that has been done to progress this important cause.

"I know she would have been delighted to hear about this event and the support you are all giving to our Earthshot finalists, the next generation of environmental pioneers," said Prince William.

The Prince of Wales has spoken about the grief he has felt following his grandmother's passing. During a walkabout of Sandringham, Prince William said walking behind The Queen's coffin 'brought back memories' of Princess Diana's death. This sad revelation was said to a royal mourner who traveled to the Sandringham Estate to leave flowers for the Queen. 

It is clear that for Prince William, and other members of the extended Royal Family, Her Majesty's passing is a painful event that will continue to be reflected on as they continue with their duties in this mourning period.