The Prince of Wales and the Duchess of Cornwall have travelled to Balmoral, Clarence House said. The Duke of Cambridge is also travelling to Balmoral, Kensington Palace said.
The Queen is under medical supervision at Balmoral after doctors became concerned for her health, Buckingham Palace said.
A Palace spokesperson said: “Following further evaluation this morning, the Queen’s doctors are concerned for Her Majesty’s health and have recommended she remain under medical supervision. The Queen remains comfortable and at Balmoral.”