Pallbearers from the Queen’s Colour Squadron of the Royal Air Force carried the casket, draped in the Royal Standard of Scotland, into a RAF C17 aircraft at Edinburgh airport ahead of its departure.
Meanwhile King Charles III has arrived back in London after a visit to Northern Ireland as part of his tour of the UK following his mother’s death.
He said the Queen had “never ceased to pray for the best of times for this place and its people”.