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Two or three clusters, read side by side across sectors, research, companies, capital, infrastructure, government designations and UKIZ relevance. There is no score and no ranking: British clusters are different from one another, not better or worse than one another.

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Side by side

Dimension	Cardiff & South WalesWales	Southampton & PortsmouthSouth East	LondonGreater London
Sectors	Semiconductors, Advanced Materials, Creative Industries Supporting: Clean Energy, Advanced Manufacturing, Digital Technologies	Defence & Security, Robotics & Autonomous Systems, Advanced Manufacturing Supporting: Clean Energy, Digital Technologies, Advanced Materials	Financial Technology, Artificial Intelligence, Creative Industries, Digital Technologies Supporting: Life Sciences, Quantum Technologies, Engineering Biology, Defence & Security
Research	Cardiff University Swansea University	University of Southampton National Oceanography Centre	Imperial College London University College London King's College London Queen Mary University of London The Alan Turing Institute The Francis Crick Institute
Companies	South Wales compound semiconductor cluster	Not recorded on the map.	Not recorded on the map.
Infrastructure	Not recorded on the map. Compound semiconductor fabrication and research facilities, materials and coatings research, production studios.	Not recorded on the map. Naval and maritime engineering facilities, photonics research centres and port infrastructure.	Digital Catapult Connected Places Catapult Cell and Gene Therapy Catapult Level39 University laboratories, teaching hospitals, data centre and compute capacity, and the densest transport network in the country.
Capital	Public and corporate capital dominate; venture funding is limited by capital intensity.	Prime contractor supply chain finance and public programmes rather than venture capital.	London venture and growth capital ecosystem Venture, growth and public market capital at a scale unmatched elsewhere in Europe, plus corporate venture arms and international investors with UK offices.
Government programmes	Wales Investment Zone designations — Investment Zones	Solent Freeport — Freeports	No place-based designation recorded.
What exists	The UK's compound semiconductor cluster, combining research, fabrication and supply chain, alongside steel and coatings materials research, and a significant screen production economy.	Maritime, naval and defence engineering, marine autonomy, photonics research and a major port and logistics complex.	Four research-intensive universities, the deepest venture and growth capital pool in Europe, financial regulators, the largest concentration of applied AI companies in the UK and a global-scale creative production economy — all within one travel-to-work area.
What's missing · UKIZ interpretation	Design demand. Fabrication capability needs a pipeline of UK customers designing products that use it, and capital patient enough for semiconductor timelines.	Routes for smaller innovators into defence and maritime procurement, and a civil market for capability developed for defence customers.	Circulation. Capital, talent and corporate demand concentrate in London rather than flowing outward, so capability elsewhere in Britain competes for attention with opportunities on the investor's doorstep. Cost also pushes production and scale-up activity out without a route back in.
What could connect · UKIZ interpretation	South Wales fabrication connected to Bristol and Cambridge chip design and to defence, automotive and energy customers who currently source overseas.	Marine autonomy and photonics connected to Plymouth marine capability, Bristol robotics and offshore energy operations — the same technologies serving defence, energy and shipping.	London as the demand and capital node of a national network: investors, corporate buyers and regulators deliberately connected to complementary manufacturing, materials and energy capability in the North, Midlands, Scotland and Wales.
UKIZ relevance	Compound semiconductors are a genuine national specialism with a fragile ownership base. The proposed Wales mission focuses on keeping the value chain here.	Marine autonomy is where defence, robotics and clean energy meet. The proposed Cornwall & Devon marine mission connects to this capability directly.	London's problem is not capability, it is direction of travel: capital and talent gravitate here rather than circulating. The proposed London zone focuses on using that density to fund and buy from capability elsewhere in Britain.
Last verified	15 August 2026	15 August 2026	15 August 2026

Proposed by UKIZ · independent · not a government designation

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