The Queen has been seen heading back to Windsor Castle today where she is expected to resume royal duties.
Her Majesty has spent the last few weeks at Sandringham and yesterday marked the bittersweet 70th anniversary of her father George VI's death and her accession to the throne.
Earlier today, she was pictured in a car, wearing dark glasses and pink lipstick, leaving Sandringham before she took a helicopter flight to Windsor.
It comes as royal sources have said she will attend a service of thanksgiving for the life of her beloved husband Prince Philip at Westminster Abbey on March 29.
As well as the service for Philip, it is understood the Queen will attend a diplomatic reception at Windsor on March 2 and the Commonwealth Service at Westminster Abbey on March 14.
The 95-year-old is also expected to be resuming other duties such as audiences, credentials and privy council meetings which will be held in person and virtually.
Yesterday, a new photo of the Queen was released showing her working from her red boxes alongside a photo of her father and one of her beloved corgi dogs to mark her Platinum Jubilee.
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It shows the beaming Queen wearing a green dress with a pearl necklace and diamond brooch working through her government documents.
Her 70-year reign has stretched from the post-war years through a new millennium and into a radically altered 21st century.
She has served as a symbol of stability as the world has changed in countless social, cultural, political and technological ways over the intervening decades.
Her Majesty also released a statement to mark the occasion - thanking well-wishers for their support and confirming she wants her daughter-in-law, Camilla, to become Queen Consort when Charles takes the throne.
She wrote: "It is a day that, even after 70 years, I still remember as much for the death of my father, King George VI, as for the start of my reign.
"As we mark this anniversary, it gives me pleasure to renew to you the pledge I gave in 1947 that my life will always be devoted to your service.
"As I look ahead with a sense of hope and optimism to the year of my Platinum Jubilee, I am reminded of how much we can be thankful for. These last seven decades have seen extraordinary progress socially, technologically and culturally that have benefitted us all; and I am confident that the future will offer similar opportunities to us and especially to the younger generations in the United Kingdom and throughout the Commonwealth.
"I am fortunate to have had the steadfast and loving support of my family. I was blessed that in Prince Philip I had a partner willing to carry out the role of consort and unselfishly make the sacrifices that go with it. It is a role I saw my own mother perform during my father’s reign."
