Precision Engineering Plastics (PEP) is a leader in the production of close tolerance injection moulded components. We manufacture products and assemblies for a wide variety of industry sectors utilising state- of-the-art machines, technology & equipment.

Together with a fully equipped in-house toolroom, a wide range of additional services and high level quality systems we provide a complete solution to customers both in the UK and Worldwide.

DFM home

Design for Manufacture

With our extensive experience in technical injection moulding, PEP offer an expert design evaluation service. Your dedicated project engineer will work closely with you to produce a full DFM report optimising your design for injection moulding manufacture.

PEP Mouldflow Analysis

In-house Mouldflow Analysis

PEP provide an expert and professional mouldflow analysis service. Our skilled engineers have over a decade of mould design and analysis experience that could solve your most difficult engineering problems.

Construction Driver Medical Testimonial Automotive Driver


“Having worked closely with PEP over the last year across a number of highly complex injection moulding projects, I can say their service has been nothing short of world class. The high attention to detail provided at the DFM stage has helped ensure the most effective design solution is always reached, leading to near perfect, first off tool T0 parts! No problem is too big for PEP and the precision tools I have seen designed so far have been highly impressive.” Technical Director, Construction Industry
"PEP have a very supportive and exceptionally responsive sales and tech team who helped us design our product and get it approved by a certifying authority within our project schedule. It’s been a pleasant co-operation." Procurement & Supply Chain Manager, Medical Industry
"PEP is not afraid to try new things and that includes offering post-moulding processes such as part marking and sub-assemblies. The amount of capability that PEP can offer is impressive to see, especially for a London based manufacturer. I know that I will continue coming back to PEP for my injection moulding needs as they are reliable, easy to work with and strive to offer high-quality services." Mechanical Engineer, Automotive Industry