UK and Japan Unveil £18 Billion Economic Partnership to Drive Growth, Jobs and Next-Generation Technologies.
London, June 2026 — The United Kingdom and Japan have announced a landmark package of investments and strategic partnerships expected to create tens of thousands of jobs and generate more than £18 billion in economic gains for the British economy, as the Prime Minister met with Japan’s leader to deepen bilateral cooperation across key industries.
The agreements mark a significant step forward in the UK-Japan relationship, strengthening collaboration in advanced manufacturing, clean energy, technology, defence, life sciences and the creative industries. The package also positions both nations at the forefront of emerging technologies, including fusion energy and offshore wind development.
Major Investments to Boost UK Economy
Among the headline investments is Hitachi’s £18 million commitment to establish a purpose-built facility in Stafford, supporting local employment and enhancing the UK’s advanced manufacturing capabilities.
A major component of the agreement is the newly announced UK-Japan Offshore Wind Compact, which is expected to facilitate up to £9 billion in Japanese investment into the UK’s offshore wind sector. The initiative will support the development of 5.9 gigawatts (GW) of floating offshore wind projects, helping accelerate Britain’s transition to clean energy.
The projects benefiting from Japanese participation include the Ossian and Green Volt developments in the North Sea, as well as the Erebus project in the Celtic Sea. These investments are expected to strengthen energy security, support decarbonisation goals and create skilled jobs across coastal communities.
Financial Sector Partnership Delivers £4.5 Billion Investment
In the financial services sector, a landmark partnership between M&G and Japan’s Daiichi Life Group has secured £4.5 billion in new investment from Daiichi into M&G-managed funds.
The capital is being deployed across both public and private markets, reinforcing the UK’s position as a leading destination for long-term international investment. The partnership is also expected to support innovation in financial products and facilitate expansion into international markets.
UK and Japan Deepen Fusion Energy Cooperation
The two countries are also strengthening cooperation in the rapidly advancing field of fusion energy.
The UK’s national fusion laboratory, the UK Atomic Energy Authority (UKAEA), and Japan’s National Institutes for Quantum Science and Technology (QST) have agreed to expand collaboration on fusion research and development.
Supporting this effort, Furukawa Electric and Tokamak Energy have signed a Memorandum of Understanding (MoU) to explore the creation of a new UK-based fusion research and development facility through a phased programme.
The agreement builds on the UK government’s commitment of £2.5 billion towards fusion energy research, aimed at ensuring Britain remains at the forefront of the global race to commercialise fusion technology.
Strengthening a Strategic Economic Partnership
The commercial agreements reinforce the objectives of the UK-Japan Industrial Strategy Partnership, which was announced during the UK-Japan Strategic Economic Policy and Trade Dialogue held in Tokyo in March 2025.
The partnership framework focuses on enhancing cooperation across several strategic sectors, including:
– Advanced manufacturing
– Clean energy
– Technology and innovation
– Defence industries
– Life sciences
– Creative industries
Government officials said the latest package demonstrates growing confidence among Japanese investors in the UK economy and reflects the shared ambition of both nations to lead the development of future technologies and sustainable industries.
Growing Value of the UK-Japan Economic Relationship
The value of the UK-Japan economic relationship continues to expand, supported by strong foreign direct investment (FDI) and growing trade links.
According to official statistics, the assessment combines Japanese FDI stock in the UK at the end of 2024 with bilateral trade figures for 2025, highlighting the increasing importance of the partnership to both economies.
Speaking following the meeting, the Prime Minister described the agreements as a major vote of confidence in Britain’s economic future, stating that the investments would help create high-quality jobs, attract international capital and accelerate innovation in sectors critical to long-term growth.
The latest announcements underline the UK’s ambition to become a global hub for clean energy, advanced manufacturing and breakthrough technologies, while further cementing Japan’s role as one of Britain’s most important strategic and economic partners.
