The Queen is under medical supervision at Balmoral and her immediate family have been informed.

Her doctors became "concerned" about the 96-year-old's health, Buckingham Palace said.

The Prince of Wales has landed at Balmoral in a helicopter, Clarence House confirmed.
Subscribe to The Telegraph with our special offer: just £1 for 3 months. Start your free trial now:
https://www.telegraph.co.uk/customer/subscribe/digitalsub/3for1/?WT.mc_id=tmgoff_pvid_conversion-subscription_editorial-iniative_03-22_EGW-13_organic_youtube

Get the latest headlines: https://www.telegraph.co.uk/

Telegraph.co.uk and YouTube.com/TelegraphTV are websites of The Telegraph, the UK's best-selling quality daily newspaper providing news and analysis on UK and world events, business, sport, lifestyle and culture.