Prince Harry and Meghan are set to travel to Britain with their children, Archie and Lilibet, in July, marking the first time the entire Sussex family has visited the country together in more than four years.
The Duke of Sussex will attend a promotional event celebrating the one-year countdown to the Invictus Games, which Birmingham will host in July 2027.
Seven-year-old Archie and five-year-old Lilibet have not been on British soil since the late Queen's Platinum Jubilee festivities in 2022.
The Duke has long expressed his eagerness to bring his children back to his home country, hoping they can learn about British culture and spend time with relatives and friends.
Adequate security measures have been confirmed for the visit.
Harry has confided to American friends that he feels "excited" about the prospect of his children reuniting with King Charles, whom they last saw in person four years ago.
Relations between father and son have reportedly improved following a period of estrangement caused by the Duke's critical comments in his memoir Spare and various television appearances.
An LA-based business associate described a "warming of the frost" between Harry and the monarch in recent months.
"Harry says he's coming back before the end of the year with the children with the express intent to reunite with his dad," the source said.
"The way in which he said it seems to make it clear that he believes that this is happening and will pave the way for a longer term peaceful relationship between them."
The associate noted that despite lingering distrust of Harry within royal circles, the King remains eager to find a path toward reconciliation with his younger son.
The Duke of Sussex has received assurances that appropriate security arrangements will be provided during the family's stay.
This follows his unsuccessful legal challenge against the Home Office last year regarding automatic entitlement to taxpayer-funded police protection whilst in Britain.
Harry has consistently maintained that bringing Meghan and the children to the UK without such protection would be unsafe.
Pursuing the matter privately, he achieved a significant victory in December when authorities granted him a comprehensive risk assessment.
The ultimate decision regarding long-term security provision now lies with Ravec, the Home Office committee overseeing royal and VIP protection matters.
However, officials across the Home Office, Cabinet Office and Foreign Office reportedly harbour concerns that reversing the current position could trigger public criticism, viewing the matter as politically sensitive.
The Duke continues to await their ruling.
Beyond the Invictus Games countdown event, the Duke plans to meet with several charitable organisations where he retains patronage roles, including WellChild and Scotty's Little Soldiers.
The Birmingham games next summer will bring together wounded, injured and sick military personnel and veterans from around the world to compete in adaptive sports.
Whether King Charles will be able to carve out time in his schedule to see his grandchildren during their visit remains uncertain.
The source close to Harry indicated that the Duke has been particularly keen for Archie and Lilibet to meet their grandfather following a private meeting between Harry and the King in London last year.
"While there have been deep seated trust issues around Harry there is a sense now that all parties want peace," the associate added.
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