Overview
- The leaders signed the UK‑Japan Frontier Technology Partnership and a Joint Declaration on Economic Security on Sunday, June 14, 2026, and announced an inward investment package of more than £18 billion.
- The announced package is split into over £9 billion for infrastructure and financial services and up to £9 billion for an Offshore Wind Compact that supports about 5.9GW of floating wind capacity.
- The Offshore Wind Compact is expected to unlock up to £9 billion of Japanese capital, back projects off Scotland’s east coast and the Celtic Sea, and when built generate enough clean power for about 8 million homes.
- The tech deal commits to coordinated R&D and commercialisation across AI, semiconductors, quantum, civil nuclear and dual‑use tech, and includes a formal partnership linking the UK Semiconductor Centre with Japan’s Rapidus to create a route to manufacturing.
- The leaders set up a Defence Capability and Industrial Council and reaffirmed support for the Global Combat Air Programme, but several GCAP contract and UK defence funding details remain to be finalised and the partnerships rely on private capital and later commercial contracts to deliver jobs and projects.