- 33 updates
The Queen will remain in hospital for two days as she receives treatment for gastroenteritis, BBC News has reported.
Buckingham Palace has confirmed the Queen has been admitted to hospital in London after experiencing symptoms of gastroenteritis.
All official engagements for this week will be either postponed or cancelled as a precaution, the Palace added.
The Queen is in hospital suffering from gastroenteritis, Sky News has reported.
The Queen is expected to spend another day at Windsor Castle as she continues to recover from her stomach illness.
As ITV News' Lewis Vaughan Jones reports, her appearance at a St David's Day military celebration in Swansea today had to be cancelled - and a trip to Italy next week is still in doubt.
The Changing of the Windsor Castle Guard has taken place as usual today.
The Queen is spending the day resting at the castle while cancelling a visit to Swansea after a bout of gastroenteritis.
The Queen will spend the day resting after suffering symptoms of gastroenteritis, Buckingham Palace said.
She was due to attend a military celebration in Wales today during the city's St David's Day celebrations, but has been forced to cancel her planned engagements because of the sickness.
She will instead spend the weekend at Windsor, a palace spokeswoman said.
The Queen has cancelled a planned visit to Swansea tomorrow because she is "experiencing symptoms of gastroenteritis".
Instead, she will stay at Windsor Castle over the weekend.
ITV News correspondent Geraint Vincent reports:
A St David's Day ceremony the Queen was due to attend tomorrow will go ahead as planned with the Lord Lieutenant of West Glamorgan, Byron Lewis, taking her place.
A Swansea Council spokesman said:
The Queen and the Duke of Edinburgh are due to fly out to Rome for a two-day visit next week.
A palace spokesman said the visit was still due to take place but a decision would be made after she is assessed in the coming days.
The Queen was due to attend a military celebration in Swansea tomorrow during the city's St David's Day celebrations.
She had planned to travel through the city to the Guildhall, where she would present St David's Day leeks to the 3rd Battalion The Royal Welsh, of whom she is Colonel-in-Chief.
She was then invited to a reception with members of the battalion and their families, before proceeding to the George Hall for lunch.
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Before falling ill the Queen took part in a series of high profile public events. This gallery shows her work over the past week.