What Wm Lee does

William Lee Ltd ("Wm Lee") is a UK-based cast iron foundry headquartered at Callywhite Lane, Dronfield, in operation since 1860 and a wholly-owned subsidiary of Castings PLC since 1991. The foundry produces iron castings across five material grades — Spheroidal Graphite (S.G.), Austempered Ductile Iron (A.D.I.), Silicon Molybdenum (SiMo), Grey Iron, and Ni-Resist — using vertical (Disamatic) and horizontal (HWS SEIATSU, GFD ComPac) moulding lines, Laempe hot-box and cold-box core making (over 400,000 cores weekly), ABB robotic fettling cells, and in-house CNC machining via the affiliated CNC Speedwell. Annual capacity is 45,000 tonnes of iron castings, with 250 tonnes/day melting throughput and 25,000+ castings shipped daily worldwide.

Wm Lee sells predominantly on a project-quote B2B basis to enterprise manufacturers in commercial truck (≈70% of production, 20,000 tonnes p.a.), automotive, rail, trailer, and general engineering sectors. Named customers include BMW, Daimler Benz, Bentley, Jaguar Land Rover, Renault, Scania, Volvo, BorgWarner, Eberspaecher, Alcon, Pandrol/Deutsche Bahn, and Claas. The company operates a direct enterprise sales motion through a Sales Director and Account Managers, holds IATF16949, ISO9001, ISO14001:2015, and HPQ certifications, and is delivering a new £18 million foundry in 2025 that will add +250 tonnes/week of capacity at 180 moulds/hr with integrated solar generation. Revenue is not publicly disclosed.

Name

Wm Lee

Legal name

William Lee Ltd

Website

https://wmlee.co.uk

Company type

Private

Founded year

1860

Operating status

Operating

Headcount range

51–100 employees

Short description

William Lee Ltd is a UK-based cast iron foundry producing S.G., A.D.I., SiMo, Grey Iron, and Ni-Resist iron castings at 45,000 tonnes annual capacity for commercial truck, automotive, rail, trailer, and general engineering manufacturers across Europe.

Ownership category

akta.pro rank

Headquarters

HQ city

Dronfield

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Iron Castings Production: Production of high-quality iron castings in S.G., A.D.I., SiMo, Grey Iron, and Ni-Resist materials. Castings range from 10g to 45kg. Revenue from part production from prototype through to full-scale production. The company is a dedicated foundry group producing cast components for commercial truck, automotive, rail, and general engineering sectors.
2. Machining and Assembly Services: In-group machining and assembly services through CNC Speedwell, providing finished components from raw casting through to completed machined parts. Includes dedicated fixtures, cutting tools, and gauging for each project.
3. Finishing and Value-Added Services: Robotic fettling, CNC lathes, auto grinders, presses, hand fettling, and specialist dedicated equipment for finishing castings to customer specifications.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

WM Lee is a vertically integrated cast iron foundry that produces high-quality iron castings in S.G., A.D.I., SiMo, Grey Iron, and Ni-Resist materials, ranging from 10g to 45kg. The company operates from prototype through full-scale production, supplying machined and finished iron components directly to commercial truck, automotive, rail, trailer, and general engineering OEMs. Annual capacity is 45,000 tonnes, with more than 25,000 castings produced per day and shipped worldwide.

Product overview

Wm Lee is a cast iron foundry offering a unified portfolio of metal casting and finishing services. The core product line includes five iron material variants: S.G. (Spheroidal Graphite) Iron, SiMo (Silicon Molybdenum), A.D.I. (Austempered Ductile Iron), Grey Iron, and Ni-Resist. These materials are produced through moulding operations (vertical Disamatic and horizontal HWS/George Fischer Disa lines), supported by core making facilities producing 400,000+ cores weekly. Finished castings are then processed through robotic fettling and CNC machining operations, with the majority machined by affiliated company CNC Speedwell. Market-focused product sub-brands target Automotive, Rail, Trailer, and General Engineering sectors. The company operates from Dronfield, UK with a new £18m foundry facility planned for 2025.

Differentiator

Problem solved

Functional benefit

Products and services

• S.G. (Spheroidal Graphite) Iron Castings

Quantifiable outcome

• Annual production capacity of 45,000 tonnes of iron castings
• +5 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

15 partnerships are on record, tiered core, major and minor.

• CNC SpeedwellcoreStrategic or Co-development PartnerDedicated in-group machining company within Castings PLC group. CNC Speedwell machines the majority of WM Lee's castings, optimising production efficiency and minimising production scrap to deliver the best value machining package. Provides complete vertically integrated solution from raw casting to finished component.
• Laempe Mössner Sinto GmbH and Laempe+SimsmajorTechnology or IntegrationEquipment partnership for cold-box core making. Investment in new Laempe coremaking equipment including 2x LL20 core shooters and a centralised LVM sand preparation plant and distribution system, preconfigured with infrastructure for two further LL20 machines. Partnership strengthens the ongoing collaboration between companies.
• ABBmajorTechnology or IntegrationSwedish industrial robot manufacturer supplying eight state-of-the-art robots with vision systems for WM Lee's process shop. Robots installed November 2017 to help finish high-quality castings for automotive, agricultural and rail industries. ABB has more than 300,000 robots installed worldwide.
• Schaffhausen based Disa AGmajorTechnology or IntegrationDisa AG supplied the GFD ComPac 540 tight flask moulding line, representing a £6 million investment. The equipment enables multi-step dynamic mechanical mould compression for maximum compaction and high dimensional accuracy.
• EirichmajorTechnology or IntegrationEirich high-intensity continuous mixer included in sand plant for GFD and HWS foundries, providing advanced sand preparation capabilities supporting high-quality moulding operations.
• InductothermmajorTechnology or IntegrationSupplier of medium frequency induction melting furnaces. Multiple 6-tonne capacity furnaces provide metal supply across foundry operations, enabling daily melting of 250 tonnes of scrap metal.
• HWS SEIATSUmajorTechnology or IntegrationHWS SEIATSU fully automated boxed moulding plant for the £18m new foundry (2007). Capable of producing 240 complete moulds simultaneously on a 750x550x225/225mm flask with pattern change turn table facility.
• General KinematicsmajorTechnology or IntegrationSupplier of VIBRA-DRUM equipment for new foundry. Provides damage-free parts cooling using vibratory cleaning in a bed of sand, with 50% energy usage compared to rotary drum systems.
• Advanced Manufacturing Research Centre (AMRC), Sheffield UniversitymajorStrategic or Co-development PartnerWorld-class manufacturing research and training facility providing engineering apprenticeship training (mechanical and electrical) and machining technician apprenticeships. Apprentices complete initial training at AMRC before returning to work alongside WM Lee's experienced engineering team.
• Sheffield CollegemajorStrategic or Co-development PartnerLocal training provider for foundry apprentices undertaking Level 3 qualification in Metal Casting, Foundry and Patternmaking. Partnership (from 2023) replaced previous sole provider Foundry Training Services.
• Foundry Training Services (Dudley)minorStrategic or Co-development PartnerFormer training provider for foundry apprentices (only UK provider of the specialized Level 3 Metal Casting, Foundry and Patternmaking course at the time). Partnership ended in 2023 when Sheffield College partnership began.
• Elite Centre for Manufacturing Skills (ECMS), WolverhamptonminorStrategic or Co-development PartnerPartnership for foundry apprentice training, supplementing AMRC and Sheffield College partnerships for specialist foundry skills development.
• Chesterfield CollegeminorStrategic or Co-development PartnerTraining provider for apprenticeships, contributing to the variety of training providers used by WM Lee for workforce development.
• Catapult Network / Innovate UKminorStrategic or Co-development PartnerWM Lee apprentices attended Catapult Network parliamentary reception at House of Commons in February 2025. The Catapult Network, backed by Innovate UK, is committed to building industries of the future and creating new jobs. Attendance provided exposure to MPs, Catapult colleagues, and industry leaders.
• High Value Manufacturing CatapultminorStrategic or Co-development PartnerHigh Value Manufacturing Catapult (HVMC) led by Katherine Bennett CBE, CEO. WM Lee apprentices met HVMC leadership at the Innovate UK Catapult Network Parliamentary Reception, connecting the foundry with the UK's advanced manufacturing innovation ecosystem.

Scale indicators16 records

Recent moves11 records

Expansion highlights4 records

Broad incumbents

• Bharat Forge: Indian-headquartered conglomerate producing forged and cast components for automotive, commercial vehicle, and industrial markets with a growing European footprint. Competes with traditional iron foundries for commercial vehicle castings and structural components on a global Tier 1 basis.
• Magna International: Global Tier 1 automotive supplier with metal casting capabilities across multiple product lines including iron castings for commercial vehicle and passenger car applications. Much broader in scope than WM Lee but overlaps on automotive iron and machined-component supply to the same OEMs (BMW, Daimler, JLR).
• Linamar Corporation: Canadian automotive components manufacturer producing machined, assembled, and cast components for transmission, driveline, and commercial vehicle applications, including iron castings competing into similar Tier 1 OEM platforms as WM Lee.

Direct peers

• GF Casting Solutions (Georg Fischer): Swiss iron and steel casting major serving automotive, commercial vehicle, and industrial customers globally with comparable S.G., ADI, and SiMo material portfolios and similar Tier 1 supplier positioning to European OEMs. Direct competitor in commercial vehicle and rail castings.
• Goodwin Steel Castings: UK-based steel and alloy castings specialist serving rail, defense, marine, and industrial markets with comparable single-site UK operating model, similar customer quality requirements (HPQ / rail certification), and a directly overlapping rail customer base (e.g., Pandrol/Network Rail).
• Endurance Technologies: Indian automotive castings major producing aluminum and iron castings for two-wheeler, passenger vehicle, and commercial vehicle OEMs with growing global footprint, increasingly competing with European foundries like WM Lee on Tier 1 platform supply contracts.
• Sheffield Forgemasters: Major UK-based iron and steel casting and forging company serving rail, defense, marine, nuclear, and industrial markets globally. Comparable UK-based specialist foundry competing for similar industrial customers and operating under comparable regulatory and energy-cost dynamics.
• Castings PLC: Parent company of WM Lee and a UK-focused foundry group operating two foundries plus in-group machinist CNC Speedwell. Direct peer through shared ownership, vertical casting/machining integration, and overlap on commercial vehicle, rail, and general engineering customers across the UK.
• Waupaca Foundry: Largest iron foundry in North America producing gray and ductile iron castings for heavy truck, agriculture, construction, and commercial vehicle OEMs at a scale comparable to WM Lee. Direct peer on material grades, casting process, and customer overlap in commercial vehicle drivetrain and chassis components.
• Tupy SA: Brazilian-headquartered iron foundry producing S.G. and SiMo castings for commercial-vehicle OEMs including Daimler, Scania, Volvo, and Cummins — directly mirroring WM Lee's customer set and material grades, and the largest dedicated commercial-vehicle iron caster competing with WM Lee for European platform awards.

Market position

Strengths6 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/WMLeeFoundry
• YouTubeyoutube.com/channel/UCo49OUQAzlgMy94VNZE1K5Q
• Facebookfacebook.com/WilliamLeeLimited
• LinkedInlinkedin.com/in/wmleeltd

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wm Lee