Following the official announcement from Buckingham Palace, the United Kingdom entered its first day of mourning.
King Charles was then expected to conduct his first audience with the prime minister and to officially sign off on the funeral plans.
The state funeral for Queen Elizabeth II will take place on Monday, September 19, 10 days after her death, at 11am local time (8pm Monday night AEST). This will be after the public gets an opportunity to pay their respects to Her Majesty.
More details regarding the funeral will be released later, but palace officials confirmed the service will be "a fitting farewell to one of the defining figures of our times".
When The Queen’s husband Philp passed away, his funeral was held eight days later.
The day of The Queen’s funeral will be a momentous occasion as the United Kingdom and the world farewell Elizabeth II.
The lying in state ends at 8:30 am. Two hours later the Queen’s coffin will be moved from Westminister Hall to Westminister Abbey.
Following the service, a gun carriage procession will take The Queen’s coffin past Buckingham Palace and arrive at Hyde Park Corner at 1 pm.
The coffin will be moved to a hearse and move towards Windsor Castle, where a committal service will be held at 4 pm at St George’s chapel.
Following the service, the coffin will be lowered into the Royal Vault.
A private burial will be held that evening and The Queen will be laid to rest, with the King and close members of the royal family in attendance.
Queen Elizabeth was the longest-reigning monarch Britain has ever seen, with 70 years on the throne.
She is survived by her four children; Prince Charles, Princess Anne, Prince Andrew and Prince Edward.
Her Majesty had eight grandchildren when she died: Prince William, Peter Phillips, Princess Beatrice of York, Lady Louise Windsor, Prince Harry, Zara Phillips, Prince Eugenie of York and James, and Viscount Severn.
She also had 12 great-grandchildren - the youngest being Beatrice and Edoardo's daughter Sienna.
Despite stepping back as senior royals, Prince Harry and his wife Meghan Markle joined Prince William and his wife Catherine, Duchess of Cornwall for a walkaround at Windsor Castle on Sunday (Australian time), suggesting both the Sussex's will be in attendance for the funeral.