ABOUT CROMPTON MOULDINGS
A Century of Manufacturing Excellence
British rotational moulding specialists manufacturing durable polyethylene and engineering plastic products from West Yorkshire.
Over the years, Crompton Mouldings has built long-term partnerships by focusing on practical engineering, dependable service and products designed to perform in real-world conditions. Combined with specialist material expertise across polyethylene and engineering-grade polymers, we continue to support projects where durability, compliance and manufacturing confidence are critical.
Over a Century of Manufacturing Excellence
Crompton Mouldings has been manufacturing rotationally moulded plastic products in West Yorkshire, Elland for generations, supplying defence, infrastructure, healthcare, construction, transport and industrial sectors across the UK.
From concept development and tooling through to production and finishing, we provide dependable UK manufacturing backed by practical engineering experience, robust supply chains and consistent product quality.
Our quality management systems and industry accreditations, including ISO 9001:2015, JOSCAR, Cyber Essentials Plus, BBA and Make UK Defence, reflect our commitment to reliable manufacturing for demanding industries where performance, traceability and long-term supply matter.
OUR VALUES
What Drives Us
Our values are the foundation of everything we do — from the way we design products to the way we work with our customers.
Reliable Manufacturing
Consistent production, dependable lead times and long-term manufacturing support for demanding industries.
Practical Engineering
Manufacturing solutions designed around real-world performance, durability and production efficiency.
UK Production Capability
Continued investment in British manufacturing, machinery, automation and skilled engineering teams.
Quality Without Compromise
Controlled manufacturing processes, accredited quality systems and attention to detail at every stage of production.
Long-Term Partnerships
Supporting customers from initial development through to ongoing production, assembly and distribution.
Continuous Investment
Ongoing investment in rotational moulding machinery, automation, tooling and production capability.
Expert People. Exceptional Products.
Our team of over 30 skilled engineers, technicians, and production specialists are the backbone of Crompton Mouldings. With decades of combined experience in rotational moulding, our people bring passion and precision to every project.
ACCREDITATIONS
Certified to the Highest Standards
Our accreditations reflect our commitment to quality, consistency, safety and responsible manufacturing. Every certification requires regular auditing, controlled processes and continuous improvement across our rotational moulding, engineering and production operations.
ISO 9001:2015
Quality Management System — demonstrating our commitment to consistent product quality and customer satisfaction.
Make UK
Together, we can build a strong and sustainable future for the UK’s manufacturing industry, developing next-generation skills and delivering growth and innovation.
JOSCAR Registered
Joint Supply Chain Accreditation Register — approved supplier to the UK defence and security sectors.