The Queen will miss the national service of thanksgiving at St Paul's Cathedral in London after experiencing "some discomfort" during Thursday's events, Buckingham Palace has said.
In a statement, Buckingham Palace said: "The Queen greatly enjoyed today's Birthday Parade and Flypast but did experience some discomfort.
"Taking into account the journey and activity required to participate in tomorrow’s National Service of Thanksgiving at St Paul's Cathedral, Her Majesty with great reluctance has concluded that she will not attend."
Hours after the statement, she rallied as planned to take part in a special dual beacon-lighting ceremony with the Duke of Cambridge.
The Queen led the lighting of the principal Platinum Jubilee beacon in a spectacular end to the first day of historic national commemorations celebrating her 70-year-reign.
The monarch's late-night appearance at Windsor Castle rounded off the start of festivities which saw the Queen take to the Buckingham Palace balcony surrounded by her family.
