Plastic Injection Moulding Chelmsford
Plastic Injection Moulding in Chelmsford, Essex – Reliable, Scalable, UK-Made
Stephens Plastic Mouldings delivers expert plastic injection moulding services to Chelmsford and the wider Essex region.
Whether you’re manufacturing parts for HVAC systems, automotive interiors, or smart energy devices, we offer custom-moulded components with the accuracy and repeatability today’s industries demand.
As a full-service UK plastic injection moulding company, we manage everything from initial design support to tooling, production, and final delivery – ensuring you work with a single, trusted supplier every step of the way.

Why Choose Stephens Plastic Mouldings for Your Chelmsford Project?
Operating under ISO 9001:2015, we deliver dependable quality assurance and traceability. Whether your project involves high-volume parts or niche technical components, our processes are built for repeatable performance and reduced risk.
We support manufacturers across Essex, from Chelmsford and Braintree to Southend and Colchester, with responsive account management and prompt delivery times from our central facility.
Our facility is set up to accommodate both small and large batch sizes - perfect for businesses testing new designs or fulfilling national-level orders.
With a technical team specialising in design for manufacture (DFM), we can optimise your product design, recommend materials, and guide you through prototyping and beyond.
We design and manufacture tooling in-house, allowing tighter control of lead times and cost. Rapid tooling and prototype runs are available to accelerate your time-to-market.
Injection Moulding: A Proven Process for Precision Parts
Injection moulding remains the preferred method for producing high-quality, complex plastic parts at scale. The process involves injecting molten thermoplastic material into a precision-machined mould, which forms the desired part upon cooling.
This allows for:
- Fast cycle times.
- Minimal material waste.
- High repeatability.
- Exceptional detail and surface finish.
- Compatibility with a broad range of polymers (e.g. ABS, polycarbonate, nylon, PP).
Whether you’re in electronics, medical supply, construction, or consumer goods – injection moulding is the reliable choice for consistency and performance.

Full-Service Plastic Injection Moulding for Chelmsford Businesses
At Stephens Plastic Mouldings, you benefit from an end-to-end offering:
- Part Design Consultation: DFM advice, CAD review, and material selection.
- Tooling Production: In-house CNC tooling and modification services.
- Prototyping: Trial moulds and quick-turn samples for testing and validation.
- Volume Manufacturing: ISO-certified production lines for low, medium, and high-volume orders.
- Assembly & Finishing: Drilling, welding, marking, or multi-component assembly.
- Packaging & Distribution: Final packing, labelling, and shipping to Chelmsford and surrounding areas.
Industries We Serve in Chelmsford
1. Smart Energy & Utilities
Enclosures and durable housings for smart metering and energy infrastructure.
2. HVAC & Building Systems
Functional parts for air handling units, ducts, and fittings.
3. Consumer Products
Branded components, cases, and packaging with a clean finish.
4. Electronics & Security
Complex mouldings for access control systems, device housings, and switchgear.
5. Agritech & Horticulture
UV-stabilised and impact-resistant parts for use in outdoor environments.
FAQs – Plastic Injection Moulding in Chelmsford
Yes. All tools are built for durability and come with standard maintenance terms to ensure long-term consistency.
Where appropriate, we offer options in regrind and eco-friendly materials, subject to design and performance requirements.
Absolutely. All production is logged and traceable to meet regulatory and internal compliance standards.
Typical lead times range from 2 - 6 weeks depending on complexity. Prototype runs can be completed even faster.
We work with all types of businesses - from startups needing their first product run to national brands scaling up their supply chain.
Get a Quote from Chelmsford’s Injection Moulding Partner
If you’re ready to take your component from design to dependable production, Stephens Plastic Mouldings is your trusted UK partner.
Contact us now for a tailored consultation
Call 0121 544 5808 OR Email sales@stephensplasticmouldings.co.uk.
We’d Love to Hear From You, Get In Touch With Us!
Please contact us if you would like to receive a quotation and/or to find our more about how we can provide the service you are looking for.