What LTi Metaltech does

LTi Metaltech Ltd is a UK-based specialist manufacturer of high-integrity pressure vessels and precision welded fabrications, operating from a facility in Milton Park, Abingdon, Oxfordshire. The company is part of the LTi Metalltechnik Group, a privately held international engineering conglomerate founded in 1969 by Klaus Isaak, with approximately 1,000 employees across seven European locations and ~€130M group turnover. LTi Metaltech specialises in pressure vessels, cryostats, vacuum chambers, and safety-critical fabrications serving healthcare, nuclear, nuclear fusion, defence, and clean energy sectors, holding extensive certifications including ISO 9001/14001/45001, ASME U+UM, PED, EN 13445, PD5500, AD 2000, ISO 3834, ISO 1090, and Joscar.

The company's core technical capabilities span robotic and semi-automated welding (TIG, MAG, plasma arc, autogenous aluminium seam welding), twinhead waterjet cutting up to 150mm thickness on an 8m x 4m bed, 2D laser cutting, CNC edge preparation, stainless steel and aluminium rolling, press brake forming, conical end pressing, and a proprietary port pulling process. In-house engineering applies CAD/CAM/CAE with finite element analysis and Design for Manufacture (DfMA) principles. Manufacturing is supported by a comprehensive NDT and destructive testing function with CSWIP-qualified personnel. The company operates around 115 employees, with one of the UK's largest teams of coded welders, and includes the wholly-owned subsidiary LTi Vessco (acquired June 2021) for bespoke low-volume projects and Metaltest for testing services.

The revenue model is project-based contract manufacturing under multi-year supply agreements with major OEM customers. The two anchor relationships are Siemens Healthineers MR Magnet Technology (multi-million-pound long-term supply covering 2,000+ cryogenic pressure vessel sets per annum for global MRI systems, 20+ year relationship) and Sellafield Ltd (a £45M+ contract awarded in February 2026 for SRP products with 3-4 years of development followed by 10 years of volume production covering 4,500-9,500 units). LTi Metaltech also serves Tokamak Energy (fusion vacuum vessels), ITM Power (hydrogen pressure vessels), Siemens CT (green ammonia components), and West Technology/Megger (high-voltage test equipment). The go-to-market is direct enterprise field sales with technical engagement, proposal development, and long-cycle relationship management — no public pricing, no resellers, and no paid digital advertising. Revenue is therefore concentrated on a small number of high-value, multi-year enterprise contracts in the UK and internationally.

Name

LTi Metaltech

Legal name

LTi Metaltech Ltd

Website

https://lti-metaltech.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

101–250 employees

Short description

LTi Metaltech is a UK specialist manufacturer of high-integrity pressure vessels and precision welded fabrications serving healthcare, nuclear, nuclear fusion, defence, and clean energy OEMs, with anchor relationships including Siemens Healthineers (MRI cryogenic vessels) and Sellafield Ltd (nuclear SRP products).

Ownership category

akta.pro rank

Product category

Specialist Metal Fabrication and Pressure Vessels

NAICS

Metal Tank (Heavy Gauge) Manufacturing (33242), Boiler, Tank, and Shipping Container Manufacturing (3324)

SIC

Ordnance & Accessories, (No Vehicles/Guided Missiles) (3480), Metalworkg Machinery & Equipment (3540)

akta.pro primary industry

Pressure Vessels, Columns & Storage Tanks (ASME/Process Vessels) (IMAHAEAF)

Keywords

• High-integrity pressure vessels
• Welded fabrications
• Cryogenic chambers
• Nuclear components
• Specialist metal fabrication

Headquarters

HQ city

Abingdon

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom pressure vessel and fabrication manufacturing: LTi Metaltech manufactures bespoke and high-volume precision-welded pressure vessels, cryostats, and safety-critical fabricated components to customer specifications. Revenue is generated through long-term supply agreements and project-based contracts with regulated industry clients, including multi-million-pound multi-year agreements (e.g., Siemens Healthineers MR Magnet Technology, Sellafield SRP). Work spans design, fabrication, testing, and delivery.
2. Contract manufacturing for regulated sectors: Ongoing production contracts with major OEM partners (Siemens Healthineers, Sellafield) provide recurring manufacturing revenue over multi-year contract terms. These contracts involve the supply of defined product types (e.g., 4,500–9,500 SRP product units) across development and volume production phases.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

LTi Metaltech designs, engineers, and manufactures high-integrity pressure vessels, vacuum vessels, cryogenic chambers, and complex welded fabrications in stainless steel, nickel alloys, and titanium. Its products serve safety-critical applications in healthcare (MRI/NMR magnet chambers), nuclear (decommissioning and processing), energy (fusion and green hydrogen), and defence markets, produced to stringent international codes such as ASME, PED, and EN 13445.

Product overview

LTi Metaltech operates as a specialist pressure vessel manufacturer offering two distinct production streams: LTi Metaltech for medium and high-volume production using robotics and semi-automation, and LTi Vessco for bespoke, low-volume projects. The core portfolio spans welding and fabrications services (TIG, MAG, robotic, plasma arc, seam welding), material preparation (twinhead waterjet cutting, 2D laser cutting, CNC edge preparation), and forming capabilities (stainless steel rolling, aluminium rolling, press brake forming, port pulling, bespoke conical forming). Supporting services include Design and Development (CAD/CAM/CAE, FEA, DfM) and comprehensive Testing (NDT and destructive testing). The company holds multiple international quality and safety certifications and serves regulated sectors including Healthcare (Siemens MRI cryogenic vessels), Nuclear (Sellafield SRP, Tokamak Energy fusion reactor), Energy Solutions, and Defence. Notable projects include Siemens MRI cryogenic pressure vessels (2,000+ units annually), the Tokamak Energy ST40 vacuum vessel for fusion research, Siemens CT green ammonia energy components, and the £45+ million Sellafield SRP contract.

Differentiator

Problem solved

Functional benefit

Products and services

• High-integrity pressure vessels Custom-engineered pressure vessels manufactured to ASME, PED, and EN 13445 standards for safety-critical industrial applications. Intended for OEMs and operators in nuclear, energy, healthcare, and defence.
• Vacuum vessels and cryogenic chambers Bespoke vacuum vessels and cryogenic chambers used in MRI/NMR superconducting magnets and fusion energy reactors. Built to ultra-high-vacuum tolerances from non-magnetic stainless steel and specialty alloys.
• Complex welded fabrications in exotic alloys One-off and low-volume welded fabrications in stainless steel, nickel alloys, and titanium, employing electron beam, TIG, and plasma welding for safety-critical structures.
• Nuclear process and decommissioning vessels Pressure and process vessels fabricated to nuclear-grade quality standards for decommissioning and processing operations, including supply to Sellafield.

Quantifiable outcome

• Manufactured over 2,000 cryogenic pressure and vacuum vessel sets per annum for Siemens MRI scanners distributed globally.
• +3 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Nine partnerships are on record, tiered core / flagship, key / significant and supporting.

• Siemens Healthineers MR Magnet Technologycore / flagshipStrategic or Co-development Partner · 1 January 2026LTi Metaltech has secured a new multi-million-pound long-term supply agreement with Siemens Healthineers MR Magnet Technology, strengthening a relationship spanning more than 20 years. LTi manufactures precision-engineered cryogenic pressure vessel sets for Siemens MRI systems installed in hospitals worldwide, with over 2,000 units produced per annum. The renewed agreement enables continued long-term collaboration on manufacturing and delivery, ensuring Siemens maintains access to a partner with established processes, proven production capacity, and a deeply embedded quality culture.
• The Engineering Trustkey / significantImplementation/ SI/ Consulting Partner · 1 January 2014LTi Metaltech launched its first apprenticeship scheme in partnership with The Engineering Trust in 2014. The collaboration delivers accredited Welding and Fabrication Apprenticeships, providing classroom-based technical learning combined with hands-on production experience. The partnership has recruited and trained new apprentices every year since 2014, representing a cornerstone of LTi's talent development strategy.
• Sellafield Ltdcore / flagshipOthersLTi Metaltech was awarded a contract in excess of £45 million by Sellafield Ltd to manufacture and supply SRP Products for Sellafield's Product and Residue Store Retreatment Plant. The contract involves delivery of 4,500–9,500 units across a 3–4 year development phase and 10-year volume production phase. LTi has committed to social and economic value in Cumbria, including a welding school, local SME partnerships, and a Cumbrian facility for warehousing and logistics. The relationship is described as a new addition to Sellafield's supply chain and the first to use their New Product Introduction process.
• Tokamak Energykey / significantStrategic or Co-development PartnerLTi Metaltech was commissioned by Tokamak Energy to design and manufacture a vacuum chamber pressure vessel for the ST40 spherical fusion reactor prototype. The vessel was engineered to withstand plasma conditions exceeding 100 million degrees Celsius. The project demonstrated LTi's ability to combine precision engineering, advanced welding innovation, and strict regulatory compliance (EN 13445) for one of the most ambitious developments in the nuclear fusion sector.
• ITM Powerkey / significantStrategic or Co-development PartnerLTi Metaltech partnered with ITM Power, a clean energy storage specialist, to manufacture a hydrogen pressure vessel prototype. The buffer tank was designed to withstand high internal pressures and varying temperature ranges, made from stainless steel for corrosion resistance. The prototype was delivered to Keele University as part of a UK programme to test hydrogen refuelling systems for next-generation vehicles, demonstrating LTi's adaptation of its expertise in high-integrity pressure systems for emerging clean energy applications.
• LTi Group of Companies (LTi Metalltechnik)core / flagshipStrategic or Co-development PartnerLTi Metaltech is part of the wider LTi Group of Companies, an international group of high-tech engineering companies founded by Klaus Isaak in 1969, based in Europe and exporting globally. The group employs around 1,000 people in seven locations with an annual turnover of circa €130 million. LTi Metaltech benefits from additional engineering and technology support from LTi Metalltechnik (Germany) and nuclear experience through LTi Vessco. The Group's support enables investment in new technologies and scaling of delivery for customers in highly regulated sectors.
• Siemens CTkey / significantStrategic or Co-development PartnerLTi Metaltech was selected by Siemens CT to manufacture key components for a UK Government-funded green ammonia energy project. LTi manufactured receiver vessels, heat exchangers, synthesis vessels, and other high-integrity components designed to withstand pressures exceeding 500 bar at elevated temperatures. LTi collaborated closely with the British Standards Institute (BSI) for regulatory compliance validation.
• LTi Vesscocore / flagshipStrategic or Co-development PartnerLTi Vessco, acquired by LTi Metaltech in June 2021 and based in Bridgend, Wales, provides specialist capability in bespoke, low-volume projects. Nuclear experience within LTi Vessco strengthens the group's overall offering. LTi Metaltech refers clients seeking low-volume bespoke projects to LTi Vessco via lti-vessco.com.
• British Standards Institution (BSI)supportingImplementation/ SI/ Consulting PartnerLTi Metaltech worked in close collaboration with the British Standards Institution (BSI) during the Siemens CT green ammonia project to carry out intermediate testing during manufacture and demonstrate that sound engineering practices were being followed, ensuring full compliance with EN 13445 pressure vessel standards.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Charlton Technologies (Charlton Group): Charlton Technologies is a UK pressure vessel and fabrication specialist serving nuclear, oil & gas, and process industries from the North East of England. It is a direct peer because it competes head-to-head with LTi Metaltech for bespoke and nuclear-grade pressure vessel work in the UK, using comparable welding certifications (ASME, EN 13445) and serving overlapping end customers.
• WEC Group: WEC Group is one of the UK's largest fabrication and welding conglomerates, providing structural steel, pressure vessels, and precision fabrications to nuclear, construction, and industrial clients. It is a direct peer because it competes for UK nuclear and process-industry fabrication work with overlapping welding codes (ASME, EN 1090) and a similar coded welder talent base.
• Senior plc: Senior plc is a UK-listed engineering group supplying high-integrity fabricated components and fluid conveyance systems into aerospace, defence, energy, and industrial markets. It is a direct peer because its Flexonics and other engineered products divisions serve the same regulated OEM customers (Siemens-class OEMs, energy, defence) with similar metal fabrication, welding, and pressure-related capabilities.

Broad incumbents

• Babcock International Group: Babcock International is a UK-listed engineering services group with material nuclear (Sellafield-tier), defence, and critical infrastructure operations. It is a broad incumbent peer because, although primarily a services integrator, it contracts and sometimes supplies fabricated pressure and containment equipment into the same Sellafield and UK defence customer ecosystem as LTi Metaltech.
• Weir Group: Weir Group is a UK-listed engineering business providing flow control, pumps, and process equipment to mining, oil & gas, and industrial markets. It is a broad incumbent peer because, while much larger and broader than LTi Metaltech, its engineered solutions division supplies fabricated pressure-related equipment into the same regulated process-industry customer base.
• Flowserve Corporation: Flowserve is a global manufacturer of pumps, valves, seals, and flow control automation for power, oil & gas, chemical, and water industries. It is a broad incumbent peer because it provides engineered pressure equipment into the same regulated industries LTi Metaltech serves (Siemens/MRI, nuclear, hydrogen) and competes for adjacent fabrication and pressure vessel scope.
• Aalberts Industries: Aalberts Industries is a Netherlands-listed industrial group operating across fluid control, integrated piping systems, and surface treatment serving semiconductor, HVAC, and industrial markets. It is a broad incumbent peer because its industrial valves and piping portfolio addresses similar flow-control and pressure-equipment customer needs in regulated process industries, though at much larger scale.
• CIRCOR International: CIRCOR International designs and manufactures flow control solutions — valves, fittings, and engineered fluid handling products — for industrial, aerospace, and defence markets. It is a broad incumbent peer because its industrial segment supplies pressure-rated components into the same process, energy, and nuclear-adjacent customers that LTi Metaltech serves with welded pressure vessels.

Market position

Strengths3 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/lti-metaltech
• Xx.com/ltimetaltech

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 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 LTi Metaltech