It was sad news this morning to learn of the passing of Queen Elizabeth II. To read more about her connection with Australia and her remarkable life and service to the Commonwealth over 70 years https://www.pmc.gov.au/her-majesty-the-queen
If you wanted to pay your respect and pass on your condolences to Buckingham Palace you can do so through the Department of the Prime Minster and Cabinet online condolence form at https://www.pmc.gov.au/condolence-form.