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Business Details
50+ Years
experience
Your Trusted Partner for Plastic Injection Moulding Solutions
Established in 1960 by Reg Cannings and Charles Congo, our family-run business has grown into a trusted name in plastic injection moulding. With over six decades of experience, we specialise in transforming designs into precision-engineered plastic components, serving diverse sectors from toys to power plants. Our 2005 relocation to modernised premises in Milton Keynes expanded production capacity, housing over 20 advanced moulding machines with capabilities ranging from 30 to 600 tonnes. Our in-house toolroom ensures complete control over tooling quality and maintenance, while our 5-tonne gantry enables handling of heavy-duty projects. We prioritise UK manufacturing, offering clients direct collaboration throughout the process, from initial design consultation to final assembly.

Our expertise extends to material selection, with an expanding polymer range tailored to specific applications, alongside 3D printing for prototype validation. Sustainability remains central to our operations, with recyclable plastic solutions that balance durability and cost-efficiency. We maintain rigorous quality standards across all stages, ensuring every product meets exacting specifications. Our vertical integration model streamlines production timelines, supported by capabilities in welding, packaging, and custom printing. With a legacy of innovation and a commitment to evolving industry demands, we continue delivering precision-engineered plastic components that meet diverse client needs.
Services
Toolroom Services Product Design Plastic Injection Moulding 3D Printing Prototypes Assembly & Packaging
Details
  • Year established: 1960
Highlights and features
  • We offer 60+ years of specialist experience in plastic injection moulding.
  • Our in-house toolroom ensures complete quality control and rapid modifications.
  • We operate 20+ advanced moulding machines with 30-600 tonne capacity.
  • UK-based manufacturing guarantees direct client collaboration and oversight.
  • Our 5-tonne gantry handles heavy-duty tooling projects with precision.
Services
Plastic Injection Moulding
We produce precision plastic components using 20+ advanced injection moulding machines with capacities from 30 to 600 tonnes. Our capabilities include manufacturing parts weighing between a few grams and 2kg, with vertical machines for specialist insert jobs. This ensures versatility across industries while maintaining tight tolerances and surface finish quality.
Toolroom Services
Our in-house toolroom designs and maintains injection moulding tools at our UK facility. This vertical integration allows rapid modifications, full quality control, and adherence to best practices. CAD integration ensures precision engineering tailored to specific production requirements and material properties.
Product Design Consultation
We assist clients from concept to production, reviewing CAD files, 2D sketches, or verbal specifications. Our team advises on material selection, manufacturability, and cost-efficiency, offering 3D printed prototypes for validation before final tooling commitment.
3D Printing Prototypes
We create physical prototypes using 3D printing to validate designs before mass production. This reduces development risks and costs while allowing functional testing. The process supports iterative improvements aligned with client specifications and end-use requirements.
Assembly & Packaging
We provide full post-moulding services including component assembly, welding, custom printing, and packaging. This streamlines supply chains by delivering finished products ready for distribution, with options for branded labelling and logistics coordination.
Questions
What plastic injection moulding services do you offer?
We provide end-to-end services including toolroom development, product design, 3D printing prototypes, injection moulding (up to 2kg parts), and post-production assembly.
How do you ensure product quality?
Our in-house toolroom maintains strict quality control, with UK-based production oversight and material selection optimised for each application's requirements.
What industries do you serve?
We support sectors ranging from agriculture and power plants to consumer goods and cosmetics, adapting solutions to diverse technical specifications.
Can you handle large-scale projects?
Yes, our 5-tonne gantry and 20+ moulding machines (30-600 tonne capacity) enable production of both lightweight and heavy-duty plastic components.
Do you offer sustainable plastic solutions?
All our products use recyclable polymers, with design optimisation ensuring material efficiency and long-term durability.
Reviews (1)
Jonathan Say
Jun 29, 2016 Report
Excellent company for plastic injection moulding. I've been using them for over 5 years on various projects. Brilliant design work and consistent finished product. Thanks for all your help KP Plastics!