Plastic Manufacturing Companies in the UK

Hi-Technology Group is an ISO 13485 and JOSCAR certified UK plastic injection moulding company based in the UK, with facilities in Waterlooville, Hampshire and Letchworth, Hertfordshire. We have manufactured plastic components for medical devices, defence programmes and safety-critical industries for over 40 years.

If you are looking for a UK plastic manufacturer who can meet the quality standards your programme requires, this page covers what we do, who we supply, and what sets us apart from other plastic manufacturing companies in the UK.

Enquire

What makes Hi-Technology different from other UK plastic manufacturers

Most UK plastic manufacturers can produce a part. Fewer can produce it to the standard that regulated industries require. The difference is in the quality management systems behind the manufacturing process — the certifications, the documentation, the controls, and the track record of supplying clients who cannot afford failure.

Hi-Technology Group holds:

ISO 13485:2016 — the international quality management standard for medical device manufacturing. This is not a general quality mark. It is a framework specifically designed for organisations in the medical device supply chain, covering traceability, validated processes and documented change control throughout the product lifecycle.

ISO 9001:2015 — quality management system certification across all manufacturing activity.

ISO 14001:2015 — environmental management system certification.

JOSCAR registration — the UK defence and security industry supply chain qualification. Procurement teams in defence programmes use JOSCAR registration as a baseline filter before shortlisting suppliers.

3M EMEA Supplier of the Year — awarded by 3M for excellence in manufacturing quality and supply chain performance. One of a small number of UK manufacturers to hold this recognition.

These are not box-ticking exercises. They are the reason we have supplied Chemring Countermeasures, Apollo Fire Detectors and Ocean Signal for years without supply failures.

Medical plastic manufacturing

We are one of the only UK plastic injection moulding companies to hold ISO 13485 certification for medical device manufacturing. This means our quality management system is built around the specific requirements of the medical device supply chain, not adapted from a general manufacturing framework.

We manufacture plastic components and assemblies for life-critical medical applications, including diagnostic device housings, drug delivery components, surgical instrument covers and emergency safety products. Our processes include full material traceability, validated IQ/OQ/PQ protocols, documented change control and PPAP documentation available on request.

For medical device OEMs qualifying UK plastic manufacturers, ISO 13485 certification is the starting point. We hold it. Most UK plastic manufacturers do not.

View Case Studies

ISO certified plastic manufacturers in the UK

Holding ISO certification is one thing. Operating to it consistently is another. At Hi-Technology, our ISO certifications govern every stage of production — from material intake and in-process inspection through to finished goods release and lot traceability.

For buyers specifically searching for ISO 9001 or ISO 13485 certified plastic manufacturers in the UK, here is what our certification covers in practice:

Every production run is carried out against a documented control plan. Process parameters are monitored and recorded. No process change is made without formal change control review and customer notification where required. Finished goods are inspected and released against defined acceptance criteria.

For defence programmes requiring JOSCAR registration, we are listed on the JOSCAR register and can provide registration details on request.

Learn More

UK plastic manufacturing locations

Waterlooville, Hampshire

Our main facility houses injection moulding presses from 25 to 650 tonnes, in-house tooling design and manufacture, ultrasonic welding, assembly and quality assurance. We serve manufacturers across Hampshire, the South Coast and nationally.

Letchworth Garden City, Hertfordshire

Our Hertfordshire facility covers injection moulding services, assembly, quality assurance and JIT logistics. We supply manufacturers across Hertford, Stevenage, Welwyn Garden City, Luton and the wider East of England.

Slovakia

Additional production capacity for high-volume programmes, operating under the same quality standards as our UK sites. UK-led oversight and quality management with European production efficiency.

For manufacturers searching for plastic companies near them in Hampshire or Hertfordshire, both UK facilities are operational manufacturing sites.

Custom and contract plastic manufacturing

We manufacture custom plastic components from prototype quantities through to millions of parts per year. Our full contract manufacturing offer covers:

Design for manufacture review and mould flow analysis before tooling is cut. Tooling design, manufacture and ongoing maintenance. Injection moulding across the full 25 to 650 tonne range. Ultrasonic welding, insert moulding and overmoulding. Assembly and testing to customer specification. JIT logistics and VMI programmes with in-house warehousing.

For OEM manufacturers consolidating their supply chain or reshoring production from overseas, we have managed multiple tooling transfers and can support the full qualification process.

Plastic Manufacturing Companies in the UK

Why Choose Hi-Technology Group?

Still wondering what sets us apart from other plastic injection moulding companies near you? Here’s a quick recap of our core differentiators and why we’re the right choice for your project:

Our moulding and assembly services meet ISO Class 8 standards, making us a trusted partner for high-purity sectors like healthcare and pharma.

We offer the advantage of dual UK production sites (Hampshire and Hertfordshire) plus a Slovakian facility in the EU, giving you local convenience, European reach, and supply chain resilience.

We’re serious about sustainability, sending zero waste to landfill and investing in energy-efficient technologies. Backed by a proven track record and industry awards, Hi-Technology Group stands as your reliable, responsible, and future-focused plastic injection moulds manufacturer.

Frequently asked questions

Can you recommend the best companies for custom plastic injection moulding in the UK?

Hi-Technology Group is an ISO 13485 and JOSCAR certified plastic injection moulding company with facilities in Waterlooville and Letchworth. With 40 years of manufacturing experience and the 3M EMEA Supplier of the Year award, we specialise in custom plastic moulding for medical, defence and safety-critical industries. We would welcome the opportunity to discuss your specific requirements.

I am interested in bulk purchasing plastic components for manufacturing — who should I contact?

For bulk plastic component supply, contact our team directly. We operate a dual-site UK and Slovakia manufacturing operation with presses from 25 to 650 tonnes, JIT delivery programmes and dedicated account management for long-term supply relationships.

Which UK plastic manufacturer holds ISO 13485 certification?

Hi-Technology Group holds ISO 13485:2016 certification covering the manufacture of plastic components and assemblies for medical devices. We are one of the only UK injection moulding companies to hold this certification alongside JOSCAR registration for defence supply chains.

What is the difference between ISO 9001 and ISO 13485 for plastic manufacturers?

ISO 9001 is a general quality management standard applicable across all industries. ISO 13485 is specifically designed for organisations in the medical device supply chain and imposes additional requirements around traceability, validated processes, change control and risk management. Medical device OEMs typically require their plastic component suppliers to hold ISO 13485, not just ISO 9001.

Do you supply medical plastics manufacturers across the UK?

Yes. We supply medical device manufacturers from our Waterlooville and Letchworth facilities, with national delivery. Our ISO 13485 certification means we can be included in your technical file and meet your regulatory supply chain requirements.

Are there plastic moulding companies near Hertford?

Our Letchworth Garden City facility is approximately 10 miles from Hertford. We supply injection moulded plastic components to manufacturers across the Hertfordshire area, including Hertford, Stevenage, Hitchin and Welwyn Garden City.

What sectors do you manufacture plastic components for?

We specialise in regulated and safety-critical sectors: medical devices, defence and aerospace, commercial and personal safety, and industrial applications. Our clients include Chemring Countermeasures, Apollo Fire Detectors, Ocean Signal and 3M.

Ready to Start Your Project?

If you are looking for a UK plastic manufacturer who can meet the quality standards your programme requires, speak to our team. We respond to all enquiries within one business day.

Contact us to request a quote or discuss your manufacturing requirements.

Learn More About Us

Request A Quote