London is gearing up for what’s being described as its “biggest ever month” for business and investment, with four major international events heading to the capital in June.

SXSW London, the 2025 Concordia Europe Summit, London Tech Week and London Climate Action Week are all set to bring thousands of business leaders, entrepreneurs and creatives from around the world into the city—part of a wider plan by the Mayor and London & Partners to cement the capital’s reputation as a global economic and innovation powerhouse.

New figures released this week show that London & Partners, the capital’s growth agency, secured more than £677 million through trade and investment in the last financial year. That includes £484 million through programmes helping tech firms expand internationally, £134 million from foreign businesses launching in London, and nearly £60 million from events being hosted in the city.

The Mayor of London, Sadiq Khan, said: “London is the best city for business in the world – an economic and cultural powerhouse bristling with creativity, innovation and enterprise. We are the engine of the UK economy – the top destination in Europe for inward investment, and a top two global financial centre.”

He added: “The political climate causing uncertainty for businesses in the US and our Government’s success in forging new deals with our biggest trading partners now provides a huge opportunity for our pro-growth, pro-investment capital city. Many of the world’s best business leaders, innovators and creatives [are] heading to London this June, and there has never been a better time to invest in the capital.”

According to the latest figures, London’s economy was worth £531 billion in 2023—over 20 per cent of the UK’s total economic output.

This flurry of activity follows the launch of the London Growth Plan earlier this year. The plan aims to boost productivity and unlock an extra £107 billion for the economy by 2035, alongside £27.5 billion in additional tax revenue to the Treasury.

The events

SXSW London (2–7 June) will mark the festival’s first appearance in Europe, bringing together leaders across tech, media and the creative industries. Speakers include Sir Demis Hassabis (Google DeepMind) and Ben Lamm (Colossal Biosciences).

The Concordia Europe Summit (8–10 June) will host political and business leaders for closed-door discussions on economic growth and entrepreneurship. Speakers include Cherie Blair, Francesca Carlesi (Revolut), and the former President of Croatia, Kolinda Grabar-Kitarović.

London Tech Week (9–13 June) is expected to be Europe’s largest event of its kind, with appearances from Wikipedia founder Jimmy Wales and Melanie Dawes, CEO of Ofcom.

London Climate Action Week (21–29 June) rounds off the month, focusing on solutions to climate change through collaboration between businesses, politicians, NGOs and local communities.

Max Alexander, CEO of SXSW London, said: “SXSW London is honoured to be part of ‘Investment Month’ and to contribute to London’s continued success as a leading global destination for investment and innovation.”

Matthew Swift, CEO of Concordia, called London “a very clear choice” for hosting their summit, citing its role as a “hub for finance, innovation and diplomacy.”

London & Partners’ chief executive, Laura Citron OBE, said: “Last year, we directly helped London companies to win nearly half a billion pounds of new international deals. And we landed over 100 international tech companies – many of which wouldn’t have picked London without us.”

International firms including Symbolica AI, a US-based artificial intelligence company, and local digital health businesses have already benefited from L&P’s trade missions and investment support. Symbolica AI, which now operates from Old Street, is actively recruiting AI and machine learning talent from London, Cambridge and Oxford.

Meanwhile, other initiatives by the Mayor, such as a £500,000 investment in a new Quantum Technology Cluster and £21 million in support for town centres, are designed to help London remain competitive amid a fast-changing global economy.

Howard Dawber, Deputy Mayor for Business and Growth, said: “Now is the time to invest in London. Across the next month, all eyes will be fixed on London for some of the leading global business events.”

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