The Duke of Sussex says he wants “reconciliation” with the rest of the Royal Family, in an emotional interview, in which he said he was “devastated” about losing a legal challenge over his security in the UK.

At present Prince Harry said he was cut off from his father King Charles, in a BBC News interview in California.

“He won’t speak to me because of this security stuff,” the prince said, adding he didn’t know how long the King had left to live.

Prince Harry spoke to the BBC in the aftermath of losing an appeal over the levels of security he and his family are entitled to while in the UK.

“There have been so many disagreements between myself and some of my family,” he said, but had now “forgiven” them.

The prince had wanted to overturn changes to his security that were introduced when he stepped down as a working royal and moved to the United States.

Saying that he felt “let down” and looking upset, he described his court defeat as a “good old fashioned establishment stitch up” and blamed the Royal Household for influencing the decision to reduce his security.

Asked whether he had asked his father the King to intervene in the dispute over security, Prince Harry said: “I never asked him to intervene – I asked him to step out of the way and let the experts do their jobs.”

The prince said his treatment during the process of deciding his security had “uncovered my worst fears”.

His court defeat, and the prospect of his security arrangements remaining unchanged, meant that he would unwilling to bring his family to the UK, he told the BBC.

“I can’t see a world in which I would bring my wife and children back to the UK at this point,” he said.

This is a developing news story. More updates to come.