Her Majesty was due to attend a military celebration in Wales during the country's St David's Day celebrations, but was forced to cancel her planned engagements.
Buckingham Palace declined to comment on her condition, but a spokeswoman earlier confirmed the Queen would spend the weekend at Windsor.
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TV presenter Keith Chegwin has died aged 60 following a "long-term battle with a progressive lung condition", his family said.
Holly has the latest forecast for the west of the region.
Holly has the latest forecast for the east of the region.