The Duke and Duchess of Cambridge's meeting with Imran Khan today will bring back special memories for Prince William, who used to play in the Prime Minister's garden when he was a little boy.
Princess Diana was very close friends with Khan's ex-wife Jemima and her mother Annabel Goldsmith because a mother-life figure to her.
Then a famous cricketer, Khan reportedly told an 11-year-old William that he would be Pakistan's Prime Minister one day, but he didn't believe him.
But today, Kate and William went to his official resident to meet him in his new role, and it was likely a special moment for both men.
Diana and Jemima became very closer when the princess started dating British-Pakistani heart surgeon Dr Hasnat Khan and fell "madly in love".
Dr Hasnat was a distant cousin of Imran Khan, and Diana would go to Jemima for advice on their relationship , especially relating to the cultural differences.
Jemima converted to Islam before their wedding and they married in a short ceremony in Paris. They had two sons together, Sulaiman Isa and Kasim and the family set up home in Pakistan.
Diana visited Pakistan three times during her two-year relationship with Dr Hasnat and was often photographed in traditional clothing.
But he was concerned that her status and famous would make his life “hell” and told her the only way they would ever be able to be together and have a normal life was if they moved to Pakistan.
Speaking in 2013, Jemima said: “She wanted to know how hard it had been for me to adapt to life in Pakistan.
She added: “Both times she also went to meet [Hasnat’s] family secretly to discuss the possibility of marriage.”
Diana was keen to impress Dr Hasnat’s family, and especially his mum.
However he later claimed he got the impression she didn’t want to move there.
Dr Khan said when he discovered Diana had asked her butler Paul Burrell to find out if they could marry in secret, he thought the idea was “ridiculous”.
“She just said everything would be all right,” he revealed. “That was her answer to everything – it will turn out all right.”
But despite her royal status, Naheed Khan was unlikely to approve of her son marring an English woman.
Jemima, 39, said: “‘[For a] son to marry an English girl is every conservative Pashtun mother’s worst nightmare.
“You send your son to be educated in England and he comes back with an English bride. It’s something they dread.”
The couple discussed marriage and children but their relationship fell apart around the time she met Dodi Al Fayed.
Jemima told Vanity Fair magazine Dr Hasnat “hated the thought of being in the glare of publicity for the rest of his life.”
Speaking at Diana's inquest, Dr Hasnat revealed it was actually Diana who ended their relationship.
He claimed she was not acting “her normal self” and he concluded she had met someone from the Mohamed al Fayed family after holidaying with them.
He said: “I did not know who it was. It could have been a bodyguard or anyone. I was surprised when she said there was no-one else.”
He said he learned it was Dodi al Fayed after hearing news broadcasts. He told her he thought "her reputation was dead”.
The court also heard details of how the couple had met in the August or September of 1995 when the Princess went to watch two heart operations at the Royal Brompton hospital in London.
Khan described her as “down to earth” and “very flirtatious with everyone”.
