Friday marks D+7, or D+7, in plans marking the Queen’s death.
Here is the timeline of events that are expected to take place over the next 24 hours.
King Charles and the Queen Consort will travel to Wales by helicopter where they will attend a service of prayer and reflection at Llandaff Cathedral.
The couple will then travel to the Welsh Parliament where they will receive condolences and meet members of the Senedd.
From there they will travel to Cardiff Castle where Charles will hold a private audience with Welsh First Minister Mark Drakeford and the President, before attending a reception hosted by the Welsh Government.
A demonstration against the monarchy should take place in front of the castle.
Reception of faith:
Upon his return to Buckingham Palace, the King will greet religious leaders in the Bow Room.
Visit of the forces:
The Prince and Princess of Wales will visit the Pirbright Army Training Center in Surrey to meet Commonwealth troops who have been deployed to the UK to attend Her Majesty The Queen’s state funeral.
Lying in state:
The lying in state continues. From 7.30 p.m., the Princes’ Vigil takes place in Westminster Hall, performed by the Queen’s four children (the King, the Princess Royal, the Duke of York and the Earl of Wessex).