What Longcroft Engineering does

Longcroft Engineering Limited is a UK-based bespoke spring and wire form manufacturer founded in 1999 and registered in England and Wales (company number 3810048), operating from Rochdale and a registered office in Todmorden, Lancashire. It operates as part of the Lee Spring Group, positioning itself as a specialist bespoke manufacturing unit within a larger spring distribution and manufacturing platform. The company is ISO 9001:2015 certified and serves customers from SMEs to multinationals across aerospace, medical, marine, offshore, oil and gas, rail, valve, electronics, telecommunications, lighting, and precision engineering sectors.

The company's core offering is the design, prototyping, and manufacture of bespoke coil springs (compression, extension, torsion, die), flat springs (clock, brush, power, constant force, leaf), wire forms, and sub-assemblies, complemented by a spring design and development engineering service and a fibre laser cutting service. Manufacturing is built around capital-intensive CNC equipment—Wafios FMU 25, KCT 1360W2, and HCT spring coiling and wire forming machines—plus an IPC LS1390 fibre laser cutter and data-recording hardening furnaces with batch-conveyor tempering ovens for material traceability. Wire diameters span 0.1mm to 20mm depending on process, with production volumes from 1-off to over 1 million units, supported by in-house engineering expertise that develops designs from rough sketches, samples, or reverse-engineered parts.

Longcroft's revenue model is project-based bespoke manufacturing under quote-driven terms, with JIT stock-holding and call-off arrangements against annual volume agreements providing a recurring revenue layer. Go-to-market is sales-led: direct sales via telephone (01706 819955), email, an online bespoke quote form, and selective industry exhibitions such as Made in Yorkshire. Distribution is direct to end customers with export capability on FOB UK Port terms. The company has also undertaken grant-funded R&D outside its core market, notably the SPIRP solar-powered irrigation pump developed with the University of Huddersfield under an Innovate UK SBRI award.

Name

Longcroft Engineering

Legal name

Longcroft Engineering Limited

Website

https://longcroftengineering.co.uk

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

Longcroft Engineering Limited is a UK-based bespoke manufacturer of springs, wire forms, and pressings, serving SMEs and multinationals across aerospace, medical, marine, oil and gas, rail, and precision engineering. It operates as a specialist unit within the Lee Spring Group, using CNC coiling and fibre laser technology.

Ownership category

akta.pro rank

Headquarters

HQ city

Todmorden

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Bespoke Spring Manufacturing & Sales: Longcroft designs, prototypes, and manufactures bespoke springs, wire forms, and pressings to customer specifications. Revenue is generated through the sale of custom-manufactured components across small, medium, and large batch volumes. The company also offers stock-holding and call-off facility against JIT (Just In Time) orders, providing recurring revenue from annual volume agreements.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Longcroft Engineering designs, prototypes, and manufactures bespoke springs, wire forms, flat springs, and pressings to customer specifications across batch sizes from 1-off to over 1 million units. The company supports customers from initial concept (sketches, samples, or ideas) through design, prototyping, production, and JIT call-off supply, working across wire diameters from 0.1mm to 20mm and a wide range of materials including exotic alloys (Inconel, Hastelloy, Titanium) for demanding industrial applications.

Product overview

Longcroft Engineering is a bespoke spring and presswork manufacturer offering a comprehensive portfolio of precision-engineered products. The core offering centers on Coil Springs (including Compression, Extension, Torsion, and Die Springs), Flat Springs (Clock, Brush, Power, Constant Force, Leaf Springs, and pressings), Wire Forms, and Sub-Assemblies. These products are complemented by Spring Design & Development services and Laser Cutting Services. The company serves diverse industries including Oil and Gas, Valves, Rail, Medical, Marine, Lighting, Electronics, and Precision Engineering, manufacturing from small batches (1 unit) to high volumes (1 million+).

Differentiator

Problem solved

Functional benefit

Products and services

• Coil Springs CNC-manufactured coiled springs (compression, extension, and torsion types), produced in wire range 0.2–3.2mm for high volumes (100 to 1 million+) and semi-automatic production for wire up to 20mm for small batches (1 to 100 units). For industrial buyers across oil and gas, rail, valves, and precision engineering.
• Compression Springs Coiled compression springs manufactured using CNC production methods for high-volume orders and semi-automatic methods for small batches. For industrial engineering buyers.
• Extension Springs Extension springs with various end arrangements including machine loops, English eye loops, cross over loops, extended loops, swivel loops, side loops, and machined inserted ends. For industrial buyers requiring custom end configurations.
• Torsion Springs Single or double coil torsion springs with special end designs, produced using CNC machines with multi-axis and laser control during bending and coiling for complex end geometries.
• Die Springs Heavy-duty die springs for industrial applications requiring high force and durability.
• Flat Springs Flat springs manufactured from strip or sheet materials including circlips, wave washers, Belleville washers, constant force springs, leaf springs, power springs, electrical contacts and terminals, clips and brackets. Range 0.05mm to 3mm with pressing force up to 50 tons.
• Clock Springs Clock springs designed and manufactured from materials 0.1mm up to 3.0mm, including constant force and brush spring variants for applications such as carbon brushes for electric motors and telecommunications equipment.
• Wire Forms Wire forms manufactured using CNC production methods between 0.3mm and 6.00mm diameter for large orders and 0.1mm to 12.00mm for small and medium quantities, including circlips and complex three-dimensional items.
• Sub-Assemblies Designed and manufactured wire form sub-assemblies including retaining clips and safety pins produced using CNC laser controlled machines.
• Spring Design & Development Engineering design and development service for springs and wire forms, including prototyping and testing. Engineers work from drawings, sketches, samples, or ideas, assessing space envelope, load requirements, and working environment (temperature, chemicals, oil) to develop custom solutions for industrial customers.
• Laser Cutting Services Fibre laser cutting services for flat springs and metal parts up to 3mm thickness using the IPC LS1390 Fibre laser cutter, enabling complex shapes and increased product range capacity.
• Spring Material Advice Materials selection advisory service covering mechanical and environmental factors, handling requirements, life cycles, and corrosion resistance, including guidance on heat treatment, plating and coating processes.

Named customers9 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

Feature5 records

Partnerships

Four partnerships are on record, tiered minor and core.

• iDE (International Development Enterprises)minorStrategic or Co-development Partner · 1 January 2018iDE is an NGO based in Zambia that serves as the local partner for the SPIRP (Solar Powered Irrigation Resonance Pump) field testing programme. Longcroft and the University of Huddersfield team worked with iDE to conduct preliminary field testing of the solar pump in Zambia in January 2018, with further larger-scale field tests planned for later in 2018.
• University of Huddersfield (Turbocharger Research Institute)coreStrategic or Co-development Partner · 1 January 2017Longcroft Engineering collaborates with Professor John Allport and the Turbocharger Research Institute at the University of Huddersfield on the SPIRP (Solar Powered Irrigation Resonance Pump) project. This partnership was established through Innovate UK's SBRI competition in conjunction with the Department for International Development. The collaboration combines Longcroft's manufacturing expertise with the university's research capabilities to develop a solar-powered irrigation pump with no moving parts.
• Leeds City Region Business Growth ProgrammeminorOthersThe Leeds City Region Business Growth Programme provided a grant to assist Longcroft Engineering with the purchase of the IPC LS1390 Fibre metal cutter machine. This capital investment grant enabled Longcroft to increase capacity and product range and to offer a laser cutting facility.
• Lee Spring GroupcoreOthersLongcroft Engineering is a Lee Spring Company, indicating that it operates as part of the Lee Spring Group. Lee Spring is a well-established manufacturer and distributor of springs and pressings, and Longcroft operates as a specialist bespoke manufacturing unit within the group.

Scale indicators3 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Airedale Springs: Airedale Springs is a UK bespoke spring manufacturer producing compression, extension and torsion springs for industrial clients. Operates a similar custom, quote-based GTM and competes for the same UK industrial and OEM customers.
• TFC Ltd (Technical Fine Components): TFC is a UK-based manufacturer of bespoke springs, pressings and wire forms serving industrial and engineering customers. Similar SME-to-multinational customer profile and bespoke design service model, making it a closely comparable UK peer.
• Associated Spring (Barnes Group): Associated Spring is Barnes Group's broader spring brand, manufacturing precision custom and stock springs across global sites. Sister entity to European Springs & Pressings and a direct peer for high-spec aerospace and industrial spring work.
• Springmasters: Springmasters is a custom compression, extension and torsion spring manufacturer offering prototype-to-production runs in the US and UK. Comparable custom-design service model and product portfolio aimed at industrial OEM customers.
• Lee Spring: Lee Spring is the parent company of Longcroft and also a direct peer — a global catalog spring manufacturer with custom-manufacture capabilities for compression, extension, torsion and flat springs serving the same industrial customer base. Longcroft operates as Lee Spring's bespoke UK manufacturing unit, making product offerings directly comparable.
• D+S Spring Engineering: D+S Spring Engineering is a UK manufacturer of bespoke springs and wire forms serving similar industrial, automotive and electronics customers. Closely comparable in scale, custom-design service model and CNC manufacturing approach.
• European Springs & Pressings: European Springs & Pressings, part of Barnes Group, is a UK/European bespoke spring and pressings manufacturer serving similar aerospace, medical, oil & gas and industrial customers. Direct head-to-head competitor for custom coil springs, wire forms and pressings with comparable ISO quality systems.
• Davall Gears & Springs: Davall is a UK manufacturer of custom springs and precision gears serving aerospace, defense and industrial customers. Overlaps with Longcroft in precision-engineered springs for regulated sectors and operates at a similar size and quality-certification tier.

Broad incumbents

• Lesjöfors: Lesjöfors is one of Europe's largest spring groups with a broad catalog and custom spring portfolio across multiple industrial verticals. Comparable in materials and processes but offers a much wider product range and geographic footprint than Longcroft's UK-only operation.
• GKN Automotive (Dowlais): GKN is a major tier-1 automotive and industrial supplier historically producing springs and driveline components. While much broader in scope, it is a relevant incumbent benchmark for high-volume automotive and industrial spring supply where Longcroft is not positioned.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance1 record

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 Longcroft Engineering