The Queen awarded a medal to an employee at a private ceremony before she was later driven to King Edward VII Hospital in London.
Before her admission for treatment for gastroenteritis, the 86-year-old presented a female member of staff an award for long service at Windsor.
More top news
Today will be fairly changeable with a real mix of showers and sunny spells.
An great-grandfather is being hailed as Britain's most reliable worker as he has never had a single day off sick.
Rebekah Brooks has been appointed Chief Executive Officer of News UK, News Corp have announced.