What SCX Special Projects does

SCX Special Projects is a UK specialist engineering company that designs, builds, tests, and installs bespoke mechanical handling systems, principally overhead cranes, for safety-critical applications in nuclear decommissioning, defence, and aerospace. Founded in 1991 and headquartered in Sheffield, the company is a subsidiary of the Kinetic Solutions Group alongside sister companies ARX, DHX and ISX. Its core technology combines mechanical, electrical, controls and instrumentation (EC&I) engineering with the proprietary MotoSuiveur load arrest system, a worm-and-wheel mechanism offered exclusively in the UK under a partnership with SIGUREN Technologies, that mechanically arrests uncontrolled loads within 30 degrees of drum rotation.

The company's product portfolio includes nuclear cranes, defence and aerospace cranes (compliant with JSP467 and JSP482 military standards), automated cranes with anti-collision and remote operation, bespoke handling systems for complex spaces, and in-service maintenance delivered through ISX. Named customers are concentrated in UK public-sector and prime contractor accounts including Sellafield Ltd, Magnox, EDF Energy, Dounreay Site Restoration Ltd, BAE Systems, the UK Ministry of Defence, the Royal Navy, and Rolls-Royce. SCX claims over 360 projects delivered across more than 35 years and over 60 bespoke systems deployed on UK nuclear sites.

SCX generates revenue through one-time bespoke project contracts (design, build, test, installation, commissioning), recurring maintenance and in-service support via sister company ISX, and licensing/royalty income from its exclusive MotoSuiveur UK rights. Pricing is project-specific and not publicly disclosed. The go-to-market is direct enterprise field sales, often procured via nuclear intermediaries such as Cavendish Nuclear, Cumbria Nuclear Solutions Ltd and NSG Environmental, and the company operates solely in the United Kingdom across England and Scotland. Certifications and compliance with ONR safety cases, IEC 61508, Lloyd's Register, and JSP standards constitute a meaningful regulatory moat.

Name

SCX Special Projects

Legal name

SCX SPECIAL PROJECTS LIMITED

Website

https://scx.co.uk

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

SCX Special Projects designs, builds, tests, and installs bespoke high-integrity overhead cranes and mechanical handling systems for UK nuclear decommissioning, defence, and aerospace clients, leveraging its UK-exclusive MotoSuiveur load arrest technology and in-service maintenance capabilities.

Ownership category

akta.pro rank

Product category

Specialist Crane Engineering

NAICS

Overhead Traveling Crane, Hoist, and Monorail System Manufacturing (333923), Engineering Services (541330)

SIC

Construction, Mining & Materials Handling Machinery & Equip (3530), Special Industry Machinery (No Metalworking Machinery) (3550), Services-Engineering Services (8711)

akta.pro primary industry

Cranes, Hoists & Overhead Material Handling (Industrial) (IMAHABAE)

akta.pro secondary industries

Crane & Hoist Safety & Monitoring Systems (Limiters, Anti-collision, Load Monitoring) (IMAHAJAL), Project Management & Owner’s Engineering / Technical Consultancy (Spec Writing, Bid Support, Site Support) (IMAJAGAO), Surface Combatants (Destroyers, Frigates, Corvettes) (IMAJABAA)

Keywords

• Specialist crane engineering
• Mechanical handling systems
• Nuclear lifting solutions
• Defence crane systems
• Load arrest systems

Headquarters

HQ city

Sheffield

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Bespoke Mechanical Handling Systems: Design, build, test and installation of bespoke overhead cranes and mechanical handling systems for nuclear, defence, aerospace and energy applications. Revenue is generated through one-time project-based contracts, typically involving complex engineering solutions tailored to specific client requirements.
2. Crane Maintenance and In-Service Support: Ongoing maintenance, servicing, repair and upgrade services for crane systems including planned preventative maintenance, emergency breakdown support, equipment surveys, and compliance checks. Delivered through ISX (part of Kinetic Solutions Group).
3. MotoSuiveur Technology (UK Exclusive): SCX holds exclusive rights to provide MotoSuiveur load arrest systems in the UK, developed in partnership with SIGUREN Technologies. Revenue generated through new installations and retrofits.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SCX Special Projects designs, builds, tests and installs bespoke mechanical handling systems, principally overhead cranes, for high-risk and safety-critical environments. Its portfolio serves the nuclear, defence and aerospace sectors, anchored by the proprietary MotoSuiveur load arrest system (UK exclusive) and complemented by nuclear cranes, defence cranes, automated cranes, specialist bespoke handling solutions and crane maintenance services delivered end-to-end from concept to commissioning.

Product overview

SCX Special Projects is a specialist mechanical handling engineering company that designs, builds, tests, and installs bespoke crane and handling systems for high-risk environments. The company's portfolio centers on its proprietary MotoSuiveur® Load Arrest System (a failsafe load arrest device offered exclusively in the UK) combined with a range of core capability areas: Nuclear Cranes, Defence Cranes (compliant with JSP467/JSP482 standards), Automated Cranes, Bespoke Handling for Complex Spaces, Moving Humans Away from Harm, Specialist Cranes, and Crane Maintenance services. The product line includes major named projects such as the Rolls-Royce Engine Transportation System (Blue Brick and Red Brick), Magnox Berkeley ILW cranes, Sellafield Pile Fuel Storage Pond cranes, Queen Elizabeth-class aircraft carrier cranes, and EDF Energy Sizewell B crane upgrades. SCX operates as part of the Kinetic Solutions Group and delivers solutions from concept through commissioning for sectors including nuclear decommissioning, defence, aerospace, and energy.

Differentiator

Problem solved

Functional benefit

Brands

• MotoSuiveur®: Proprietary load arrest system designed to protect against uncontrolled loads in nuclear lifting operations. The system uses a worm and wheel mechanism to provide failsafe protection.

Products and services

• MotoSuiveur Load Arrest System A proprietary failsafe load arrest device for cranes and hoists featuring a worm and wheel mechanism that mechanically locks to arrest uncontrolled loads within 30 degrees of drum rotation. Available in eight models with braking torque capacities from 1,600 Nm to 102,000 Nm, with optional integrated load recovery drive and torque limiter. SCX is the exclusive UK provider.
• Nuclear Cranes Bespoke high-integrity cranes and lifting solutions designed for the nuclear industry, including Class 1 nuclear cranes, nuclear masts for tool manipulation, and refurbishment services for ageing nuclear lifting equipment. Supports decommissioning and operations at UK licensed sites such as Sellafield, Harwell, Hunterston and Hinkley.
• Defence and Aerospace Cranes High-integrity lifting and mechanical handling solutions for safety-critical defence applications, including munitions cranes compliant with JSP467/JSP482, naval ship cranes, clean room cranes and aircraft carrier handling systems.
• Automated Cranes Automated overhead crane systems with intelligent automation capabilities including real-time 3D environment mapping, route planning, anti-collision systems, inventory management, and semi-automated remote operation from control desks. Suitable for production buffering, waste handling and energy-from-waste applications.
• Specialist and Bespoke Handling Cranes Custom-designed overhead lifting and mechanical handling equipment for applications beyond standard crane capabilities, including limited-headroom and below-ground access solutions, extending bridge systems for hard-to-reach areas, radiation hardening, extreme temperature operation, anti-collision systems, remote operation and engineered solutions for confined or complex infrastructure constraints. Incorporates a modified-off-the-shelf (MOTS/COTS+) approach.
• Crane Maintenance and In-Service Support In-service support services including emergency breakdown support, planned preventative maintenance, tailored service packages, crane parts and repairs, equipment surveys and upgrades, and sector-specific expertise for nuclear and defence cranes. Delivered in compliance with PUWER, LOLER, PSSR and ONR safety case requirements, including through sister company ISX within the Kinetic Solutions Group.

Quantifiable outcome

• MotoSuiveur arrests loads within 30 degrees of drum rotation (as little as 30mm drop height), compared to significant drop heights with traditional hoist safety brakes
• +3 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered core, flagship and minor.

• SIGUREN TechnologiescoreStrategic or Co-development PartnerSCX partners with SIGUREN Technologies to bring the MotoSuiveur load arrest system to UK customers. SIGUREN developed the innovative MotoSuiveur technology, and SCX holds exclusive rights to provide it in the UK market. The partnership enables SCX to offer a revolutionary hoist safety solution to its nuclear, defence and aerospace customers.
• Kinetic Solutions Group (KSG)flagshipOthersSCX Special Projects is part of the Kinetic Solutions Group, a parent company that also owns sister companies ARX, DHX, and ISX. KSG provides shared services, group brand identity, and corporate oversight. SCX is identified as part of the Kinetic Solutions Group family of specialist engineering companies.
• Street CranecoreStrategic or Co-development PartnerStreet Crane is SCX's sister company within the Kinetic Solutions Group. SCX customises machinery from Street Crane to create innovative cranes for challenging applications. For the Queen Elizabeth-class aircraft carriers, SCX customised machinery from Street Crane to meet the unique requirements of safe lifting at sea.
• Cumbria Nuclear Solutions Ltd (CNSL)minorChannel Partner/ Reseller/ DistributorCNSL acted as an intermediary/procurement partner for the Sellafield Pile Fuel Storage Ponds crane project. SCX was procured for Sellafield via CNSL.
• Cavendish Nuclear LimitedminorChannel Partner/ Reseller/ DistributorSCX was supplied to Magnox Berkeley via Cavendish Nuclear Limited for the ILW import/export facility handling solution project.
• NSG Environmental LtdminorChannel Partner/ Reseller/ DistributorNSG Environmental Ltd procured the MILWEP loading cranes from SCX for Magnox, acting as an intermediary in the procurement process for the nuclear decommissioning project.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Regional players

• MacGregor (Cargotec): Marine-focused cargo and load handling solutions provider, part of Cargotec, with strength in offshore, naval and shipyard cranes. Comparable to SCX in serving naval shipbuilders (BAE Systems class of work) but concentrated on maritime load handling rather than the nuclear and onshore defence niches SCX dominates.
• ABUS Kransysteme: German manufacturer of overhead travelling cranes, hoists and crane components serving European industrial customers. Overlaps with SCX in standard and customised industrial cranes, with comparable component-level expertise, but operates in mainland Europe and does not serve the UK nuclear/deep-defence niche directly.

Broad incumbents

• Liebherr: Diversified global manufacturer of cranes (mobile, crawler, tower, maritime) and heavy equipment. Overlaps with SCX in heavy-duty lifting for marine and industrial customers but does not focus on the niche safety-critical nuclear refurbishment and bespoke hoist-safety market that anchors SCX.
• Terex Corporation: Global equipment manufacturer spanning aerial work platforms, materials processing and cranes (including the legacy Demag and Genie brands). Comparable to SCX as a broad incumbent in industrial lifting, though its portfolio is far wider and does not specialise in bespoke nuclear-grade crane systems.
• Konecranes: Global leader in lifting equipment and services with a broad portfolio of industrial cranes, port solutions and maintenance. Comparable to SCX in crane manufacturing and service offering, but operates at vastly larger scale across many sectors and lacks SCX's nuclear/deep-defence specialisation.

Direct peers

• Street Crane Company: UK overhead crane manufacturer and SCX's sister company within the Kinetic Solutions Group. Street Crane provides the MOTS/COTS+ base machinery that SCX customises for nuclear and defence projects, making it the closest internal peer and a direct benchmark for component-level crane engineering capability.
• Morris Material Handling: Manufacturer of bespoke overhead cranes, hoists and lifting solutions with a strong presence in the UK and Ireland. Directly comparable to SCX in target sectors (steel, power, nuclear-adjacent) and in the design and build of customised industrial cranes for safety-critical applications.
• Whiting Corporation: US-based manufacturer of heavy-duty overhead cranes, railroad maintenance equipment and nuclear spent fuel handling systems. Directly comparable to SCX in nuclear-grade crane engineering, heavy-lift customisation, and service to defence/utility customers in regulated environments.
• Pelloby Engineering: UK-based bespoke overhead crane and lifting equipment manufacturer serving industrial and specialist applications. Comparable to SCX in its focus on custom-engineered crane solutions for demanding environments, with similar project-based delivery model and UK customer base.

Others

• SIGUREN Technologies: Developer of the MotoSuiveur load arrest technology and SCX's core strategic partner. While not a competitor, SIGUREN is the source of SCX's key proprietary differentiator, making the relationship and broader technology ecosystem a directly comparable adjacency to track.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/scx

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 SCX Special Projects