The UK hosts some of the world’s most strategically significant critical minerals companies, from London-listed mining majors controlling global cobalt supply to Sheffield superalloy processors embedded in Rolls-Royce’s aerospace supply chain. The Minor Metals Trade Association (MMTA) — headquartered in the UK and representing 130+ companies with a collective worth exceeding $10 billion — is the world’s primary trade body for technology metals and minor metals. Critical minerals companies UK-wide span mining, trading, processing, assaying, recycling, and market intelligence, making Britain a disproportionately important node in global supply chains for materials the defence, aerospace, and clean energy sectors depend on.
How We Ranked the Top 10 Critical Minerals Companies UK
Rankings reflect a combination of revenue scale, commodity coverage, strategic importance to Western supply chains, and role within the UK critical minerals ecosystem. London-listed majors are included where their UK listing and trading operations give them genuine UK market significance — they are ranked for scale and legitimacy, not claimed as UK-headquartered businesses. Estimated figures are flagged as such; confirmed figures are drawn from Companies House filings or published accounts.
1. Glencore — London (LSE: GLEN)
Glencore produces approximately 28,000 tonnes of cobalt annually from its Democratic Republic of Congo operations — more than any other company in the world. Swiss-headquartered and London Stock Exchange-listed, Glencore’s cobalt marketing function operates out of London, making it the dominant force among critical minerals companies with a UK market presence. Its critical minerals portfolio extends to nickel and copper at meaningful scale.
The company’s DRC cobalt assets — centred on Mutanda and the Katanga complex — account for a substantial share of global refined cobalt supply. For buyers and investors tracking cobalt price movements, Glencore’s production decisions carry more market weight than any other single producer. Full profile: Glencore critical minerals.
2. Rio Tinto — London (LSE: RIO)
Rio Tinto‘s $6.7 billion acquisition of Arcadium Lithium in 2024 repositioned it as one of the leading Western lithium producers alongside its existing copper and titanium minerals operations. Dual-listed on the London and Australian stock exchanges, Rio Tinto’s primary listing in London anchors it among the critical minerals companies UK investors most frequently access for battery materials exposure.
Its lithium development pipeline includes the Rincon brine project in Argentina and the Jadar lithium-boron deposit in Serbia, while Oyu Tolgoi in Mongolia is among the largest new copper mines commissioned in the past decade. Full profile: Rio Tinto lithium and critical minerals.
3. Advanced Alloy Services — Sheffield, UK
Advanced Alloy Services (AAS) reported revenue of £52,635,866 for the year ended 31 December 2024 — confirmed via Companies House — making it the largest pure-play UK-headquartered critical minerals processor by turnover. Operating from a 44,000 sq ft facility in Dinnington, Sheffield, AAS buys, processes, and sells recycled nickel and cobalt superalloy scrap alongside high-purity pure metals including molybdenum, tungsten, niobium, tantalum, chromium, hafnium, rhenium, titanium, and vanadium for aerospace, power generation, defence, and medical applications.
Key relationships include a global metals recovery programme with Rolls-Royce and active R&D partnerships with Cranfield and Coventry Universities under an Innovate UK Knowledge Transfer Partnership targeting bioleaching of critical metals. AAS holds the King’s Award for Enterprise — International Trade 2024. Its MD, Stephen Hall, chairs the MMTA. The company operates under Advanced Alloys Group Ltd, with subsidiary operations in Virginia, USA (Advanced Revert LLC) and an Asia JV announced in 2025. Full profile: Advanced Alloy Services.
4. Westbrook Resources — Sheffield, UK
Westbrook Resources reported revenue of approximately $85 million (around £66.8 million) in its last filed accounts, positioning it as the largest UK ferro alloys producer and one of the broadest critical minerals distributors in Britain. The company completed an employee ownership trust (EOT) transition in 2024 and is led by CEO Shaun Walton.
Westbrook produces ferro titanium in Sheffield and distributes 60+ products — including chromite sand, pure metals, minor metals, and ores — to steel mills, foundries, and industrial buyers across 40+ countries. Storage and logistics infrastructure spans the UK, Europe, South Africa, and North America. An MMTA member and ISO 9001 certified, Westbrook’s product breadth across ferro alloys and critical minerals places it among the most operationally significant UK-headquartered traders.
5. Darton Commodities — Guildford, UK
Darton Commodities is one of the largest independent cobalt metal suppliers in the global market and the source of one of the industry’s most widely referenced cobalt market intelligence reports. Founded in October 2000 by Guy Darby and Roy Walton, Darton’s trading book covers cobalt, nickel powder and briquettes, molybdenum, rhenium, ruthenium, and lithium.
Beyond trading, Darton’s market research function gives it an influence disproportionate to its size: the Darton cobalt report is a primary reference for procurement and investment decisions across the global cobalt trade. The company is an LME member, a founding member of the Cobalt REACH Blue Consortium (CoRC), and active within the Cobalt Development Institute. Full profile: Darton Commodities.
6. Wogen Resources — London, UK
Wogen Resources, founded in 1972 and employee-owned, is among the most diversified specialist metals traders in the UK. Its book spans antimony, cobalt, chromium, tantalum, niobium, molybdenum, tungsten (ferro tungsten, tungstates, tungsten oxides), vanadium, platinum group metals including rhodium, ruthenium and iridium, rare earths, and mineral sands including rutile, zircon, and ilmenite.
Customers include governments, steel mills, aerospace companies, electronics manufacturers, foundries, miners, smelters, and merchants across the globe. Wogen operates offices in London, Hong Kong, China, South Africa, and the USA. As a founding member of the MMTA, a member of the International Tungsten Industry Association, and an affiliate of the London Platinum & Palladium Market, Wogen represents the breadth of what a specialist UK metals trader can cover across the critical minerals landscape.
7. Lipmann Walton — East Molesey, Surrey, UK
Lipmann Walton, established in 1953, has traded continuously in specialist minor metals for over 70 years — longer than most of the companies on this list have existed. Its core expertise sits in rhenium, hafnium, and zirconium: materials without which modern aerospace superalloy manufacture and industrial gas turbine production are not possible.
The company’s supply relationships in Russia, Central Asia, and former Soviet states — established from 1993 — reflect decades of sourcing infrastructure that cannot be replicated quickly. Lipmann Walton also trades tantalum, niobium, titanium, tungsten, vanadium, scandium, tellurium, gallium, indium, germanium, and a range of rare earth metals. It is partnered with Heraeus Precious Metals on rhenium upgrading and holds active membership of the MMTA, including participation in the MMTA Asia Sub-Committee.
8. Alfred H Knight — Lancashire, UK
Alfred H Knight, founded in 1881, provides independent inspection, analysis, and assaying services for metals, minerals, solid fuels, and agricultural commodities across 45+ countries, employing approximately 2,700 people with estimated revenue of around $107 million. It holds LME and COMEX approved assayer status — the independent quality and quantity verification layer underpinning metals transactions globally.
AHK’s 2024 acquisition of Grinding Solutions Ltd in Cornwall expanded its capabilities into mineral processing and metallurgical consultancy, deepening its critical minerals service offering. In a supply chain characterised by trust and verification, Alfred H Knight occupies an irreplaceable position: every transaction in the critical minerals market ultimately relies on independent assaying to confirm what is being bought and sold. Memberships include MMTA, LBMA, LPPM, and IPMI.
9. ELG Utica Alloys — UK
ELG Utica Alloys specialises in recycling nickel and cobalt-based superalloy scrap generated by aerospace and industrial gas turbine manufacturing — a supply chain position that makes it structurally adjacent to Rolls-Royce and the wider UK aerospace sector. As demand for superalloy components in next-generation engines grows, the ability to recover and recirculate high-purity cobalt and nickel from complex scrap streams becomes strategically significant for UK supply chain resilience.
ELG Utica is an active MMTA member. Its role within the superalloy circular economy — processing material that would otherwise require primary mining of cobalt and nickel — places it at the intersection of recycling, critical minerals supply, and defence industrial policy.
10. Project Blue — London, UK
Project Blue is among the most frequently cited independent critical minerals consultancies globally, providing market intelligence, supply chain analysis, and strategic advisory services to governments, mining companies, processors, and institutional investors. Its focus spans battery minerals, technology metals, rare earths, and geopolitical supply risk — exactly the territory that policy makers and procurement professionals are most focused on.
In the UK critical minerals ecosystem, advisory and intelligence functions are as strategically important as trading volumes. Project Blue’s analysis informs investment decisions, government strategy papers, and corporate supply chain assessments. Its position as an independent voice — not tied to a trading desk or mining company — gives its assessments weight that commercially affiliated research cannot replicate.
Critical Minerals Companies UK — Summary Comparison
| Company | HQ | Type | Key Mineral(s) | Distinguishing Feature |
|---|---|---|---|---|
| Glencore | London (LSE-listed) | Miner / Trader | Cobalt, Nickel, Copper | World’s largest cobalt producer (~28kt/year) |
| Rio Tinto | London (LSE-listed) | Miner | Lithium, Copper, Titanium | $6.7bn Arcadium acquisition; leading Western lithium pipeline |
| Advanced Alloy Services | Sheffield | Processor | Ni/Co superalloy, Mo, W, Nb, Ta, Hf, Re | UK’s largest pure-play critical minerals processor; £52.6m revenue confirmed |
| Westbrook Resources | Sheffield | Producer / Distributor | Ferro titanium, chromite, minor metals | Largest UK ferro alloys producer; ~$85m revenue; EOT-owned |
| Darton Commodities | Guildford | Trader / Research | Cobalt, Nickel, Mo, Re | LME member; industry-standard cobalt market intelligence |
| Wogen Resources | London | Trader | Antimony, W, Ta, Nb, PGMs, REEs | MMTA founding member; broadest critical metals book in UK |
| Lipmann Walton | East Molesey | Trader / Stockholder | Rhenium, Hafnium, Zirconium, Ta, Nb | 70+ years continuous operation; irreplaceable in aerospace rhenium supply |
| Alfred H Knight | Lancashire | Assaying / Inspection | All metals and minerals | LME + COMEX approved assayer; 145 years; 45+ countries |
| ELG Utica Alloys | UK | Recycler / Processor | Ni/Co superalloy scrap | Aerospace superalloy circular economy; Rolls-Royce adjacent |
| Project Blue | London | Consultancy / Intelligence | Battery minerals, Tech metals, REEs | Most widely cited independent critical minerals advisory in the UK |
Critical Minerals Companies UK — The 2026 Outlook
The UK government’s Critical Minerals Strategy and the FORGE initiative — targeting domestic processing capability for battery and technology metals — have elevated critical minerals companies UK-wide from niche industrial suppliers to strategic national assets. Sheffield’s superalloy processing cluster, anchored by AAS and ELG Utica, is central to government thinking on defence supply chain resilience, while MMTA membership — held by Westbrook, Wogen, Lipmann Walton, AHK, Darton, and AAS — gives British companies outsized influence in shaping global minor metals market standards. As European critical minerals policy tightens under the EU Critical Raw Materials Act and US reshoring incentives redirect supply chains, UK processors and traders with established international networks are positioned to act as the Western world’s preferred sourcing intermediaries for materials China currently dominates at the refining stage. For investors and procurement teams tracking the cobalt and nickel markets, the companies profiled here represent the depth and breadth of what Britain’s critical minerals industry actually looks like in 2026.
This article is for informational purposes only and does not constitute investment advice.
Which are the top critical minerals companies in the UK?
The leading critical minerals companies in the UK include Glencore (world’s largest cobalt producer, London-listed), Rio Tinto (London-listed, major lithium and copper miner), Advanced Alloy Services (Sheffield-based superalloy processor, £52.6m revenue), Westbrook Resources (UK’s largest ferro alloys producer), and Darton Commodities (major independent cobalt trader and LME member), among others spanning trading, recycling, assaying, and advisory services.
Does the UK mine critical minerals?
The UK has limited active critical minerals mining — there are no major operating lithium, cobalt, or nickel mines — but it punches well above its weight in processing, trading, recycling, and market intelligence. Sheffield hosts a significant superalloy revert processing cluster, and Cornwall is an emerging focus for lithium exploration. UK-listed companies including Glencore and Rio Tinto operate large-scale critical minerals mines globally.
What is the MMTA and why does it matter for UK critical minerals?
The Minor Metals Trade Association (MMTA) is the world’s largest trade body for minor metals, ferroalloys, and rare earths, headquartered in the UK and representing 130+ member companies with a collective worth exceeding $10 billion. Many of the UK’s leading critical minerals companies — including Advanced Alloy Services, Wogen Resources, Lipmann Walton, Alfred H Knight, and Darton Commodities — are active MMTA members. The MMTA’s annual conference is the primary global gathering for the technology metals and minor metals trading community.
Which UK company is the world’s largest cobalt producer?
Glencore, listed on the London Stock Exchange, is the world’s largest cobalt producer, with annual output of approximately 28,000 tonnes sourced primarily from its Democratic Republic of Congo operations. While Glencore is Swiss-headquartered, its London listing and cobalt marketing function make it the most significant critical minerals company in the UK market by cobalt scale.
What critical minerals does the UK produce or process?
The UK’s critical minerals industry is primarily focused on processing, trading, and recycling rather than primary mining. Sheffield-based companies including Advanced Alloy Services and ELG Utica Alloys process superalloy scrap to recover nickel, cobalt, molybdenum, tungsten, rhenium, hafnium, and other high-value metals for aerospace and defence applications. UK traders including Wogen Resources, Lipmann Walton, and Westbrook Resources handle a wide range of technology metals, ferro alloys, and minor metals sourced globally.
