Prince Harry and his wife Meghan joined William and wife Kate on a walkabout among crowds near Windsor Castle on Saturday following the death of their grandmother Queen Elizabeth
raising the prospect of a rapprochement between the brothers.
The two sons of King Charles, once so close after the death of their mother Diana in a Paris car crash in 1997,
have fallen out in recent years after Harry and Meghan gave up their royal titles to move to the United States.
The couple had been in Britain on a brief visit when the queen, Britain's longest reigning monarch, died on Thursday.
Like other senior members of the royal family, Harry rushed to be by the queen's side as she deteriorated at Balmoral Castle in Scotland,
and a spokesperson for the heir to the throne said an invitation for the Windsor walk had been extended by William.
A royal source described it as an important show of unity at an incredibly difficult time for the family. They emerged from the same car, all wearing black.