The Prince of Wales will be the next head of the Commonwealth, the BBC understands.
The Queen had said that it was her "sincere wish" that Prince Charles would succeed her in the role of "one day". [1
The non-hereditary role would not have gone automatically to Prince Charles, with some suggestions it could rotate among the 53 leaders  The BBC's diplomatic correspondent, James Landale, said a source told the BBC that the leaders of the Commonwealth had agreed to the appointment.
Prime Minister Theresa May and Canadian Prime Minister Justin Trudeau had previously pledged their support to Prince Charles.
The meeting during a two-day summit included 46 heads of Commonwealth governments and foreign ministers from the remaining seven countries.
The Commonwealth represents about 2.4 billion people, but critics say the organization is so disparate that it does not know what it is for, said BBC Royal Correspondent Jonny Dymond.
He also said that a statement confirming the appointment is expected at the end of the meeting, and the news would be "to the great satisfaction" of the Queen.
- "No Other Options" for the Commonwealth Head
- Commonwealth: Seven Things You May Not Know
Other topics that were discussed at the two-day summit in London were marine conservation, cyber- Security and trade between countries.
The decision on who would replace the queen after her death had to be unanimous.
What is the head of the Commonwealth doing?
The role currently exercised by the Queen, is largely symbolic and capped
It serves to unify the 53 Member States and fulfill the Commonwealth's core objectives, including linking countries through trade and international cooperation.
The Head of the Commonwealth usually visits the Member States regularly to promote these connections personally.
A decision on all subsequent heads must be made by the leaders of the Commo nwealth
Meanwhile, the Commonwealth Secretary General and the Secretariat, its central organization, help plan many Commonwealth activities.
Sources: The Royal Family, The Commonwealth