GeminiPrototyping · Manufacturing+44 (0)1844 339857
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UK Plastic moulding
and prototyping services.

Our plastic moulding services run from first sketch to finished part, design, prototyping, tooling, moulding, finishing and assembly, all under one UK roof. One accountable team, from concept through to production.

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Trusted by
ISO 9001 Certified·4.7 on Google

Why Gemini

One plastic moulding supplier, start to finish.

01 / Why Gemini

Made in the UK

All our UK plastic moulding is designed, tooled and produced across our own two facilities, nothing subcontracted to Europe or the Far East.

Every method, one roof

Custom moulded plastics across injection, LSR and blow moulding, plus tooling, finishing and assembly, all in-house, so the whole job stays under one team.

Low to high volume

From one-off prototypes to repeat production, scaled to your needs. The same tooling carries straight from prototype into production, so you don't pay for a new mould when you scale up.

One accountable team

You talk to the people doing the work — answerable from first enquiry to final batch, with full traceability throughout.

Our Services

Custom mould plastics, made in-house.

02 / Services

Manufacturing

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Injection Moulding

Precision moulded plastic parts, prototype to production, in all thermoplastic materials.

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Liquid Silicone Rubber

LSR moulding for flexible, sealing and medical-grade components, prototype to production.

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Blow Moulding

Hollow parts, bottles and containers, moulded to a repeatable wall thickness and finish.

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Production tooling

Lifetime production tooling cut in house in hard aluminium or toughened steel — built to run for the full life of your part.

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Finishing & Assembly

Pad printing, marking, coating, sub-assembly and packing — parts delivered ready to use.

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Design & Prototyping

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Design & product development

Concept models and production-ready CAD, from your sketch to manufacturable drawings, in house.

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Rapid Prototyping

3D-printed parts in a range of engineering materials — more than just PLA and resin — to prove form and fit, in days rather than weeks.

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Rapid tooling

Rapid tooling for injection and blow moulding, so concepts can be proven in the production-intent material and process before committing to full production tooling.

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CNC Machining

Machined prototypes and fixtures from billet, in engineering plastics and a range of metals.

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Inside Gemini

See how we work.

03 / Video

Not sure which process you need?

Send us details about your part and we'll get back to you within 24 hours.

Client Testimonials

Trusted by teams who can't compromise.

04 / Proof

“I have been using Gemini for more than five years now and have never had any issues with regards to delivery times and quality. The team is extremely knowledgeable and skilled to handle any design geometry we throw at them — and they treat every enquiry with confidentiality.”

“Working with Gemini is a true pleasure; Richard and his team go above and beyond to execute all project objectives in a timely and diligent manner. They really become an extension of your team.”

“The continuous effort, experience and trouble-solving attitude of Richard, Jake and the team became a vital element in the start-up phase of our company. The end result: a beautiful, high-quality baby bottle, fully food-compliant.”

“Richard has a vast knowledge of manufacturing and is highly skilled at finding the best resources to realise ideas in the shortest times — a truly flexible approach to product development.”

Read Full Case Study
Prasad Kelkar
EU Packaging Development Manager · Ecover

26+

Years in business

4.7

Rated on Google

ISO 9001

Certified quality

100%

Made in the UK

Trusted by

BMW
Rolls-Royce
Airbus
Bentley
GSK
Novartis
Unilever
Mondelez
Kraft Heinz
Bacardi
3M
Veolia
Sharp