The Queen has left hospital a day early as her recovery from a stomach bug has been speedier than originally thought.
Her Majesty was admitted to King Edward VII Hospital on Sunday suffering the effects of gastroenteritis and was forced to cancel official visits.
Buckingham Palace expected her to be admitted for a "couple of days" but she left at 2:43pm on Monday afternoon.
The Queen was escorted by a nurse but walked unaided and got into a waiting Bentley to be driven back to Buckingham Palace.
Queen Elizabeth II leaves the King Edward VII hospital
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Britain's Queen Elizabeth II, left, shakes hands with the head nurse at the King Edward VII hospital following a one-day stay caused by a stomach ailment, London Monday, March 4, 2013. The 86-year-old queen fell ill Friday and was being treated at Windsor Castle until Sunday, when she was moved to a central London hospital as a precaution. (AP Photo/Alastair Grant) (credit:AP)
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Britain's Queen Elizabeth II leaves the King Edward VII hospital following a one-day stay caused by a stomach ailment, London Monday, March 4, 2013. The 86-year-old queen fell ill Friday and was being treated at Windsor Castle until Sunday, when she was moved to a central London hospital as a precaution. (AP Photo/Alastair Grant) (credit:AP)
Queen Elizabeth II in hospital(03 of15)
Queen Elizabeth II leaving King Edward VII's Hospital in London, where she was staying after being admitted with symptoms of gastroenteritis. (credit:PA)
Queen Elizabeth II in hospital(04 of15)
Queen Elizabeth II leaving King Edward VIIs Hospital in London, where she was staying after being admitted with symptoms of gastroenteritis. (credit:PA)
Queen Elizabeth II in hospital(05 of15)
Queen Elizabeth II leaving King Edward VII's Hospital in London, where she was staying after being admitted with symptoms of gastroenteritis. (credit:PA)
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Britain's Queen Elizabeth II leaves the King Edward VII hospital following a one-day stay caused by a stomach ailment, London Monday, March 4, 2013. The 86-year-old queen fell ill Friday and was being treated at Windsor Castle until Sunday, when she was moved to a central London hospital as a precaution. (AP Photo/Alastair Grant) (credit:AP)
Queen Elizabeth II in hospital(07 of15)
Queen Elizabeth II leaving King Edward VIIs Hospital in London, where she was staying after being admitted with symptoms of gastroenteritis. (credit:PA)
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Police officers guard the King Edward VII hospital in London, Monday, March 4, 2013, where Queen Elizabeth II has been admitted. The Queen was taken to the hospital late Sunday. Britain's Queen Elizabeth II was hospitalized Sunday over an apparent stomach infection that has ailed her for days, a rare instance of ill health sidelining the long-reigning monarch. Elizabeth will have to cancel a visit to Rome and other engagements as she recovers, and outside experts said she may have to be rehydrated intravenously. (AP Photo/Alastair Grant) (credit:AP)
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A TV correspondent holds up a British national newspaper showing headlines about Queen Elizabeth II who has been admitted to the King Edward VII hospital in London Monday, March 4, 2013. The Queen was taken to the hospital late Sunday. Britain's Queen Elizabeth II was hospitalized Sunday over an apparent stomach infection that has ailed her for days, a rare instance of ill health sidelining the long-reigning monarch. Elizabeth will have to cancel a visit to Rome and other engagements as she recovers, and outside experts said she may have to be rehydrated intravenously. (AP Photo/Alastair Grant) (credit:AP)
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Ann Macmilian the London CBC correspondent holds up a British national newspaper showing headlines about Queen Elizabeth II who was admitted to the King Edward VII hospital in London Monday, March 4, 2013. The Queen was taken to the hospital late Sunday. Britain's Queen Elizabeth II was hospitalized Sunday over an apparent stomach infection that has ailed her for days, a rare instance of ill health sidelining the long-reigning monarch. Elizabeth will have to cancel a visit to Rome and other engagements as she recovers, and outside experts said she may have to be rehydrated intravenously. (AP Photo/Alastair Grant) (credit:AP)
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British police officers stand guard outside King Edward VII hospital in London where Queen Elizabeth II was admitted to be assessed for symptoms of gastroenteritis, Sunday, March 3, 2013. (AP Photo/Sang Tan) (credit:AP)
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British police officers stand guard outside the King Edward VII hospital in London where Queen Elizabeth II was admitted to be assessed for symptoms of gastroenteritis, Sunday, March 3, 2013. (AP Photo/Sang Tan) (credit:AP)
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British police officers stand guard outside the King Edward VII hospital in London where Queen Elizabeth II was admitted to be assessed for symptoms of gastroenteritis, Sunday, March 3, 2013. (AP Photo/Sang Tan) (credit:AP)
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British police officers stand guard outside the King Edward VII hospital in London where Queen Elizabeth II was admitted to be assessed for symptoms of gastroenteritis, Sunday, March 3, 2013. (AP Photo/Sang Tan) (credit:AP)
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Queen Elizabeth II leaves King Edward II Hospital after being admitted with symptoms of gastroenteritis at King Edward VII Hospital on March 4, 2013 in London, England. The Queen left the hospital and returned to Buckingham Palace after being admitted on Sunday as a precautionary measure. (Warrick Page/Getty Images) (credit:Warrick Page/Getty Images)