Prince Harry has arrived in Greenwich today for an international summit with the Prime Minister in what is understood to be his final engagement before jetting off to Canada.

Hosting the UK-Africa Investment Summit in Greenwich, the Duke of Sussex met with Boris Johnson and other world leaders as the Prime Minister set out his post-Brexit trade pitch.

The appearance comes just hours after Prince Harry said he had "no other option" but to step back from the Royal Family, and the summit is likely to be his final official engagement before the Sussexes take a "leap of faith" and leave the monarchy.

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The Government summit has seen several police-escorted convoys make their way through Greenwich this morning, and a number of roads have been closed.

Millennium Way, Meridian Gate, Waterview Drive,Edmond Halley Way, Tunnel Avenue and Ordnance Crescent will remain closed until 5:30pm today.

Looking relaxed and wearing a suit, shirt and tie at the InterContinental O2 hotel in Greenwich, the duke and Prime Minister had an informal "catch-up" chat for 20 minutes, one-to-one.

The duke was not officially attending the summit but was holding audiences - one-to-one meetings - with a number of foreign leaders at the request of the UK Government.

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Harry sat down to talks with Saad-Eddine El Othmani, prime minister of Morocco, Peter Mutharika, president of Malawi and Filipe Nyusi, president of Mozambique.

On Sunday night, Harry gave an emotional speech where he told the "truth" about leaving royal duties behind in a bid for a "more peaceful life" for his family.

His comments came after Buckingham Palace released the outcome of talks between the Queen, Prince of Wales, Duke of Cambridge and Harry over the future role of the Sussexes.

Also at the conference, Boris Johnson set out his post-Brexit trade pitch to African leaders, saying he would put "people before passports."

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With the EU departure coming on January 31, Mr Johnson was pledging to be a partner "through thick and thin" with African nations as he eyes fresh trade deals across the globe.

"Change is coming and our system is becoming fairer and more equal between all our global friends and partners, treating people the same, wherever they come from," he told the UK-Africa Investment Summit.