What Expromet does

Expromet Technologies Group is a UK-based precision engineering group that operates four wholly-owned subsidiaries providing integrated casting, machining, and fabrication services to performance-critical industries. Its subsidiaries include Investacast (investment casting, one of the world's leading suppliers per company materials), Haworth Castings (sand and gravity die casting across two Hampshire sites), Metaltech Precision (CNC turning and milling across 60+ machining cells in a 50,000 sqft Somerset facility processing superalloys including Hastelloy, Inconel, Monel, and Titanium), and Tiverton Fabrications (welding and fabrication, acquired January 2026). The group's core technologies include investment casting, sand casting, gravity die casting, pressure die casting, CNC machining (including 5-axis), MIG/WIG welding, and forging, supported by certifications including AS9100, JOSCAR, ISO 9001/14001/45001, EN15085, and ISO 3834-2. Expromet is led by CEO Rob Guest (PhD in metallurgy) and serves customers in aerospace, defence, energy, medical and scientific, industrial automation, safety-critical equipment, transportation, and pump and valve sectors.

The business operates on a B2B contract manufacturing model with quote-based pricing, serving global OEMs, Tier 1 suppliers, and primes through direct enterprise field sales. Revenue is generated through one-time manufacturing contracts for precision components as well as managed services including global sourcing, supply chain management, and stockholding/call-off inventory programs. The group is headquartered in Ilfracombe, Devon, with UK production in Somerset, Hampshire (two sites), and Devon (Tiverton), plus a new Philippines facility (Expromet Asia Inc., opened 2024) for extended sourcing and tariff mitigation, and a US sales office. The group reports 101-250 employees and is on a stated trajectory toward £100 million turnover by 2030, having achieved 10% revenue growth in the prior financial year.

Go-to-market is sales-led and event-driven, with active participation in major industry exhibitions (Farnborough, ILA Berlin, DSEI, AIX, DPRTE) and direct engagement through account managers and technical specialists. The group's strategic posture centres on inorganic growth, having completed three acquisitions since 2018, alongside the buildout of integrated single-source manufacturing capabilities and progressive accumulation of sector-specific accreditations to deepen relationships with defence and aerospace primes.

Name

Expromet

Legal name

Expromet Technologies Group Limited

Website

https://expromet.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

101–250 employees

Short description

Expromet Technologies Group is a UK-based precision engineering group operating four subsidiaries that provide investment casting, sand and gravity die casting, CNC machining, and welding/fabrication services to aerospace, defence, energy, and industrial customers globally.

Ownership category

akta.pro rank

Product category

Precision Engineered Castings and Machined Components

NAICS

Aerospace Product and Parts Manufacturing (33641), Nonferrous Metal Die-Casting Foundries (331523), Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing (336419)

SIC

Aircraft & Parts (3720), Nonferrous Foundries (Castings) (3360), Guided Missiles & Space Vehicles & Parts (3760)

akta.pro primary industry

Aerospace Fasteners & Hardware (IMABANAA)

Keywords

• Precision metal casting
• CNC machining services
• Aerospace components manufacturing
• Defence fabrication services
• Investment casting solutions

Headquarters

HQ city

Devonport

HQ country

United Kingdom

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Casting Services: Revenue generated from providing investment casting, sand casting, gravity die casting, and pressure die casting services for aerospace, defence, energy, medical, automotive, and industrial automation sectors. Components are manufactured to customer specifications with full traceability.
2. CNC Precision Machining Services: Revenue from precision CNC turning and milling services including 5-axis machining, sliding-head machining, and large-format machining. Services include automated loading systems and high-end filtration systems for high-volume production.
3. Welding and Fabrication Services: Revenue from custom fabrication and welding services including EN15085-certified welding for rail applications and ISO3834-2 welding for defence and aerospace. Supports assembly and integration of fabricated parts into larger systems.
4. Global Sourcing and Supply Chain Management: Revenue from managing global supply chains for customers, providing turnkey solutions including overseas sourcing, logistics, and relationship management. Includes new facility in Philippines for CNC machining and stockholding services.
5. Stockholding and Call-off Services: Revenue from inventory management and on-demand call-off facilities, planning ahead to ensure customers have access to components when needed. Reduces supply chain risks with replenishment schedules tailored to customer requirements.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

Expromet Technologies Group is a precision engineering group that manufactures and supplies metal castings, precision-machined components, and fabricated assemblies for performance-critical applications. The group combines four UK-based subsidiary businesses—Investacast (investment castings), Haworth Castings (sand and gravity die castings), Metaltech Precision (CNC machining), and Tiverton Fabrications (welded fabrications)—to deliver turnkey engineered solutions to global OEMs, Tier 1s, and prime contractors in aerospace, defence, energy, medical, and other regulated industries.

Product overview

Expromet Technologies Group is a precision engineering group consisting of four complementary subsidiary companies: Investacast (investment castings), Metaltech Precision (CNC machining), Haworth Castings (sand and gravity die castings), and Tiverton Fabrications (welding and fabrication). The group delivers world-class engineering solutions ranging from UK-manufactured investment, sand and gravity die castings to low-cost castings and forgings sourced from international supply chain partners. The portfolio serves aerospace, defence, energy, industrial automation, medical and scientific, safety-critical equipment, transportation, and pump and valve sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Investacast Investment Casting High-strength investment (lost wax) castings with complex geometries, fine details, and tight tolerances. Component dimensions from 5mm to 450mm, weights from 5g to 28kg, with excellent surface finish and minimal post-machining required. Served to aerospace, defence, and industrial OEMs globally.
• Haworth Castings Sand and Gravity Die Casting Fully-tested, machined and finished sand and gravity die castings for performance-critical applications. Sand casting from 5mm to 1500mm+ dimensions and weights up to 300kg. Gravity die casting from 5mm to 1000mm dimensions and weights up to 35kg. Serves aerospace, defence, energy, and transportation customers.
• Metaltech Precision CNC Machining Full CNC turning and milling services including 5-axis prismatic machining, sliding-head machining, CNC multi-task machining, and automated gantry multi-tasking. Operates from a 50,000 sqft facility with over 60 machining cells and automated loading systems. Processes exotic materials such as Hastelloy, Inconel, Monel, and Titanium for aerospace, defence, and industrial customers.
• Tiverton Fabrications Welding and Fabrication Performance-critical welded solutions including bespoke vessels, vacuum chambers, cylinders and tubes manufactured in a variety of materials. EN15085-certified for rail welding and ISO 3834-2 certified. Capable of components from 6mm to 100mm plate thickness, overall dimensions up to 3m x 3m x 10m, and weights up to 25 tonnes. Founded in 1983, acquired by Expromet in January 2026.
• Pressure Die Casting Dimensionally accurate components in aluminium, magnesium, and zinc/Zamak with high surface finish and accuracy at high production rates. Supports thin walls and simple internal features, dimensions 5mm to 300mm, weights up to 5kg.
• Forging Services Forged components requiring high strength and durability, sourced through the group's global supply chain network. Achieves surface finishes of 1.6 micrometres for aluminium alloy parts and finer than 1.6 micrometres for brass alloys. Served to performance-critical industrial customers.
• Global Sourcing and Supply Chain Management Turnkey global sourcing and supply chain management services including overseas sourcing, logistics, inventory management, call-off/replenishment schedules, and on-demand stockholding. Backed by a new CNC machining facility in the Philippines providing local manufacturing and faster delivery for global customers seeking to mitigate tariff and supply chain risk.

Quantifiable outcome

• 10% revenue growth achieved in last financial year with trajectory toward £100 million turnover by 2030
• +1 more outcomes

Named customers6 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Make UK DefencecoreStrategic or Co-development Partner · 12 February 2026Expromet hosted a specialist defence manufacturing event in partnership with Make UK Defence at Metaltech Precision in Somerset. The event brought together SMEs, primes and Tier 1 suppliers to discuss collaboration, capability and the future of performance-critical UK supply chains. Make UK Defence plays a vital role in representing and championing the UK defence SME supply chain.
• Babcock InternationalminorStrategic or Co-development Partner · 12 February 2026Mark W of Babcock presented at the Expromet-hosted defence manufacturing event, sharing perspectives on current programme requirements and highlighting the importance of trusted manufacturing partners in supporting delivery, compliance and long-term programme resilience.
• EatonminorStrategic or Co-development Partner · 12 February 2026John Loxton of Eaton presented at the Expromet-hosted defence manufacturing event, sharing perspectives on current programme requirements and highlighting the importance of trusted manufacturing partners.
• Midlands Aerospace Alliance (MAA)coreStrategic or Co-development Partner · 23 October 2024Expromet joined the Midlands Aerospace Alliance in October 2024, demonstrating commitment to excellence and innovation in the aerospace industry. MAA connects aerospace businesses across the Midlands region.
• Joint Supply Chain Accreditation Register (JOSCAR) supported primescoreOthersJOSCAR is supported by leading primes and buyers including BAE Systems, QinetiQ, Leonardo, and Rolls-Royce. Expromet's JOSCAR accreditation simplifies procurement for these aerospace and defence buyers.
• Expromet Group CompaniescoreStrategic or Co-development PartnerInvestacast (investment casting), Haworth Castings (sand and gravity die casting), Metaltech Precision (CNC machining), and Tiverton Fabrications (welding/fabrication) operate as complementary businesses under Expromet Technologies Group, providing integrated manufacturing solutions.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Howmet Aerospace: Global leader in investment castings, super-alloys, and aerospace components following the Arconic spin-off. Directly overlaps with Expromet's investment casting business (former Firth Rixson) and targets the same aerospace primes, but operates at far greater scale and vertical integration.
• Voestalpine: European steel and specialty metals group with aerospace components and precision parts divisions. Comparable as a continental European supplier of aerospace-grade metal components and as a potential M&A consolidator in the precision engineering space.
• Carpenter Technology Corporation: Specialty alloy producer and precision component manufacturer with significant aerospace and defence exposure. Comparable to Expromet's specialty alloy machining (Hastelloy, Inconel, Monel, Titanium) but operates a much broader metallurgical portfolio upstream into alloy production.
• Precision Castparts Corp: Berkshire Hathaway-owned global manufacturer of investment castings, forgings, and fastener systems for aerospace and power. Directly comparable to Expromet's casting and machining offering for aerospace and defence primes, but at materially larger scale and broader process breadth.

Others

• Bodycote: Global provider of heat treatment and metal joining services to aerospace, defence, and automotive supply chains. Comparable as an enabling service provider in the same supply chain rather than a direct casting competitor, often used by the same primes.

Direct peers

• Tecomet: Contract manufacturer of precision-engineered components for medical, aerospace, and defence end-markets, combining machining, casting, and assembly. Closely mirrors Expromet's single-source, multi-process, regulated-end-market business model.
• Hitchiner Manufacturing: Specialist in investment castings and countergravity castings for aerospace, defence, and industrial gas turbine markets. Closely comparable process portfolio to Expromet's investment casting offering and similar aerospace prime customer base.
• Signicast: US-based investment casting specialist serving aerospace, defence, medical, and industrial automation customers. Directly comparable to Investacast in process technology (investment casting) and end-market mix.
• Wall Colmonoy: Specialty alloy and precision casting manufacturer serving aerospace, defence, and industrial markets with surface engineered products. Comparable to Expromet's nonferrous precision casting capabilities and end-market focus on performance-critical industries.
• Doncasters Group: UK-based precision castings manufacturer serving aerospace, defence, and industrial gas turbines with investment casting, sand casting, and machining. Highly comparable to Expromet in process mix, customer base, and certification profile, and was named as a previous employer of Expromet's Group Technical & Quality Director.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@expromet
• LinkedInlinkedin.com/company/expromet-technologies-group-limited

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

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

M&A3 records

Investments

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

Frequently asked questions about Expromet