Qatar has vowed to invest £5billion in Britain within five years in a boost for the post-Brexit economy.
Speaking in London, Qatari PM Sheikh Abdullah bin Nasser bin Khalifa al-Thani announced his country would continue ploughing cash into Britain.
Prime Minister Theresa May is hosting her Qatari counterpart in No 10 for talks this evening.
Sheikh Abdullah, speaking at the Qatar-UK Business and Investment Forum, said: 'Over the next three to five years Qatar will invest £5 billion in the UK economy through various investment funds and relevant parties in Qatar – which will constitute another addition to its already successful investments in the UK.'
The investments will focus on energy, infrastructure, real estate and services, Sheikh Abdullah announced shortly after appearing at the investment forum, which brings together over 400 British and Qatari business leaders and senior politicians.
Qatar has already invested more than £40billion across Britain, including in iconic real estate such as London's Shard and Canary Wharf buildings, the Harrod's department store, while the country also bought the Olympic Village following the London 2012 Olympics.
It also plans to turn the current US embassy in London into an exclusive hotel after the US moves to a new base.
'If you look at what we have done here, it has always been a win-win situation,' Sheikh Abdullah added.
International Trade Secretary Liam Fox was also present at this week's event, which moves to Birmingham tomorrow.
Dr Fox was keen to show the world that Britain is open for business despite leaving the EU, and said that Qatar made an ideal post-Brexit trading partner.
'We have to stop viewing things through the prism of Brexit,' he told the forum.
'Qatar and UK are natural allies and I believe that private sector growth in both countries can enhance ties and promote foreign direct investment.'
The minister insisted that Brexit would 'accelerate the changes the UK has to undergo in a globalised world,' and that other European Union members would also have to adapt to the shifting landscape of international trade.
Mrs May is set to officially trigger Brexit on Wednesday.
Qatar's sovereign wealth fund chief meanwhile said that the vote to leave the European Union would not prevent its future investment in Britain.
'There is pressure from my board to diversify in terms of geography and asset class, but we are still looking, even after Brexit, for opportunities,' Abdullah Bin Mohammed Bin Saud Al Thani, chief executive officer of the Qatar Investment Authority (QIA), told the forum.
He also announced plans to open an office in Silicon Valley as part of a drive to move the Qatari economy away from oil and into more sustainable sectors, such as the knowledge economy.
The QIA boss said the fund would open a San Francisco office by the beginning of next year.