But it is thought only her two eldest children, heir Prince Charles and daughter Princess Anne, were able to complete the sad journeys to the monarch's Highland estate at Balmoral in time to say their final goodbyes before she slipped away.
Officially to the outside world the 96-year-old monarch was under "medical supervision" at her Aberdeenshire retreat, but the extreme gravity of the situation was clear by the haste of the response from all senior royals.
By chance, both Charles and Anne were in Scotland at the time of the Queen's sudden deterioration and were able to be with their mother well ahead of the rest of the family.
Senior aides ordered the Queen's burgundy-liveried helicopter to travel up from Windsor as early as 6.48am to collect Charles from Dumfries House in Ayrshire, where he had stayed the night after attending an international symposium on allergies.
He was seen boarding the aircraft carrying a briefcase for the short trip to Royal Deeside, arriving at Balmoral at 10.27am.
Camilla - now the Queen Consort - was staying at the couple's Scottish residence Birkhall and travelled the eight miles to Balmoral by car.
Princess Anne was already in Scotland too, having a full diary of engagements on the Hebridean islands of Skye and Raasay the previous day.
Denne historien er fra September 09, 2022-utgaven av Evening Standard.
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Denne historien er fra September 09, 2022-utgaven av Evening Standard.
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