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Rubber And Plastics Companies in Cardiff: 56 Active Firms (2026)
Rubber and plastics manufacturers in Cardiff make polymer components, packaging and industrial materials for regional supply chains.
Demand is usually specified by procurement, operations and engineering teams, rather than by consumer-facing buyers. Cardiff-area producers tend to sell into business-to-business supply chains where repeat orders, tooling ownership, material grades and delivery reliability shape the relationship. Typical engagements range from low-volume bespoke moulding or fabrication work to ongoing call-off production for packaging, components and industrial materials. The buyer is often a regional manufacturer, installer, distributor or contract packer that needs a dependable local supplier, not a speculative product studio. Sales therefore tend to be practical: tolerances, resin choice, lead times, certificates and unit economics matter more than brand positioning.
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Cardiff has 56 actively trading rubber and plastics companies, making this a compact industrial cohort rather than a broad national cluster. The reported employment footprint is 581 people, which points to a market weighted towards owner-managed sites and mid-sized production teams rather than very large plants. Its position within the Cardiff metropolitan area suits regional supply relationships: short-haul logistics, repeat component supply and maintenance-linked fabrication work can all matter where buyers want access to production staff as well as finished goods. Revenue scale appears uneven, with a smaller upper tier sitting above the general base of local manufacturers.
Polymer production in Cardiff sits close to customer audit and compliance rather than a single sector rulebook. Buyers tend to specify resin grades, traceability, tolerances, packaging formats and waste-handling expectations within contracts, especially where parts enter industrial, construction or food-adjacent supply chains. Factory operators also have to manage machinery safety, fire risk, environmental controls and end-of-life material obligations. For researchers, that means supplier qualification, documentation and quality systems may matter as much as headline turnover when comparing otherwise similar moulders, extruders and fabricators.
Demand appears tied less to consumer brand cycles than to the health of nearby industrial buyers, construction inputs and packaging requirements. The cohort looks mature rather than start-up heavy, with a relatively narrow layer of revenue-scaled operators and many businesses likely to remain site-based manufacturers. Margin pressure tends to come from polymer feedstock costs, energy use, labour availability and customer concentration. Further change may therefore come through process automation, recycled-material capability, succession planning and selective consolidation, rather than a wave of newly formed manufacturers entering the market.
56
Active firms
2026
10
Above £5M
revenue threshold
6
Newer incorporations
since 2022
Key facts
About 17% of the trading cohort reports turnover above £5M (10 of 56 firms) — the rest sits below that revenue band.
10% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Cardiff’s rubber and plastics manufacturers sit between raw-material suppliers and buyers that need formed, moulded or converted inputs.
Packaging, polymer components and industrial materials are the main product categories described for this local manufacturing segment.
The mix appears to include operating manufacturers, asset-light trading entities and smaller owner-managed producers.
Top Cardiff Rubber And Plastics companies
SEALMASTERS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops, manufactures and supplies industrial sealing components including oil seals, rotary shaft seals, hydraulic and pneumatic seals, O‑rings, gaskets, packings and bonded seals. Also designs…
Serves industrial businesses, engineers and maintenance/procurement teams needing sealing components or custom mouldings to specification, including manufacturers and operators of hydraulic,…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
PELICAN HEALTHCARE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures and supplies disposable medical devices for ostomy care, including stoma bags, seals and related accessories. Provides stoma care products and educational resources for patients and…
Serves people living with a stoma and ostomy patients seeking ongoing stoma care products and support, alongside healthcare professionals needing education, case studies and wound care resources.
Financial Health
StableStable · -89% CAGR over 2y
Location
Retro Protect Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
THE PTH GROUP LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures extruded plastic profiles and tubes for lighting applications, including PMMA and polycarbonate diffusers, microprismatic and closed‑section profiles, glazing beads, and related…
Sells to B2B customers in the lighting and LED sectors, including manufacturers, luminaire designers and industrial buyers needing custom polymer profiles, tubes and lighting components.
Financial Health
StrongStrong
Location
Dipec Plastics Holdings Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -15% CAGR over 4y
Location
S & L V Weston Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsManufactures non‑metallic components including washers, shims, seals, gaskets and cap‑closure liners. Produces parts by punching, pressing and water‑jet cutting from materials such as plastics,…
Serves B2B manufacturers, packaging businesses and engineering buyers needing non-metallic components, including cap and closure producers and customers sourcing washers, shims, seals, gaskets and…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 1y
Location
MINERVA LABORATORIES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures custom ear moulds, hearing aid inserts and noise protection devices for audiology departments and professional audiologists. Uses 3D scanning and digital design to produce bespoke ear…
Serves professional audiologists, audiology departments in UK hospitals, and private hearing practices, with some direct-to-consumer sales for custom hearing protection via its online shop.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
PRO CONNECT RECRUITS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
Wellsbridge Engineering Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong · Hiring · 26% CAGR over 3y
Location
VENEX TECHNICAL DEVELOPMENTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
SIMBA HAULAGE LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Graham Sweet Studios Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns and manufactures display props and 3D elements for retail visual merchandising, exhibitions, events, and film/TV production. Produces polystyrene letters, shapes, seasonal decorations, and…
Serves B2B customers including retailers, visual merchandising teams, marketing companies, design and print agencies, brands, exhibition/event organisers, and TV and film production teams needing…
Financial Health
StrongStrong · Hiring · 17% CAGR over 3y
Location
SDM GLASS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -70% CAGR over 4y
Location
DRAGON COMPOSITES LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
WINDOOR MATE HOLDINGS LIMITED
Trajectory
5y · 2022–NowFinancial Health
Insufficient historyInsufficient history
Location
Mouldings Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable
Location
3D Print Land Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
Location
Ensinger
Develops and manufactures engineering and high‑performance plastic materials, including compounds, semi‑finished shapes, composites and machined components. Supplies profiles, tubes and custom…
Serves B2B engineering and manufacturing buyers in aerospace, biopharma, building, electronics, food, medical, mobility, oil and gas, renewable energy, semiconductor and industrial sectors.
Location
CAMPLAS TECHNOLOGY LTD.
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsManufactures glass‑reinforced plastic (GRP) storage tanks and related products for industrial and environmental applications, including chemical, water, sewage and fuel storage tanks, underground…
Serves B2B customers in industrial manufacturing, chemicals, agriculture, sewage and water treatment, fuel storage, environmental protection, flood prevention and fire-fighting infrastructure.
Financial Health
DistressedDistressed · -4% CAGR over 2y
Location
WYE VALLEY CONSULTING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures rubber components using compression, transfer and injection moulding. Produces custom and standard parts including O-rings, seals, gaskets, electrical connectors and EMC shielding for…
Serves B2B manufacturers and engineering buyers in aerospace, automotive, electronics, marine, medical and military sectors needing standard or bespoke rubber components made to defined…
Financial Health
WeakWeak
Location
LUC (UK) Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsManufactures custom polyurethane elastomer products including wheels, rollers and moulded components. Provides roller resurfacing, refurbishment and testing services, producing hot‑cast and cured…
Serves B2B OEMs, equipment builders and industrial operators in steel and aluminium processing, offshore oil, gas and renewables, amusement rides, logistics, material handling, plastics and food…
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
Beacons Products Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies and converts expanded polyethylene foam products, including acoustic flooring underlays and functional foam materials, distributing sheet and roll foam and related products for flooring,…
Sells to trade and business customers needing expanded polyethylene materials for flooring, acoustic and matting applications, with a stated focus on South Wales and the West Country.
Financial Health
StableStable · 0% CAGR over 4y
Location
Ensinger
Develops and manufactures engineering and high‑performance plastic materials, including compounds, semi‑finished shapes, composites and profiles, and produces machined and injection‑moulded technical…
Serves B2B engineering and manufacturing customers in aerospace, biopharma, electronics, food, medical, mobility, oil and gas, renewable energy, semiconductor and industrial machinery sectors.
Location
GWALIA HEALTHCARE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures polymer-based pharmaceutical and medical packaging using injection and blow moulding, including child‑resistant containers and bottles. Provides contract packing of vitamins and food…
Serves B2B pharmaceutical, nutraceutical and medical device companies, including healthcare brands needing child-resistant containers, vitamin pack packaging, contract packing and cleanroom assembly.
Financial Health
StableStable · -67% CAGR over 4y
Location
BIPLAS MEDICAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures plastic components using technical and medical injection moulding. Provides tooling, component and mould design, cleanroom moulding for medical devices and biotech packaging,…
Sells to businesses needing outsourced injection moulding, especially medical device and biotech packaging companies, plus firms in technical and precision manufacturing that require cleanroom…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
MOLLERTECH LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures injection‑moulded plastic components for the automotive industry, particularly interior parts such as centre consoles, column cladding and glove compartments. Provides engineering,…
Serves B2B customers in the automotive industry, particularly vehicle manufacturers needing interior plastic component programmes supported by engineering, testing and project management.
Financial Health
WeakWeak · -69% CAGR over 4y
Location
FLOWTECH PRECISION MOULDINGS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
WeakWeak · -79% CAGR over 3y
Location
YEARNTREE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -11% CAGR over 4y
Location
LINEAR PLASTICS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides contract plastic injection moulding and toolmaking services. Supports product design, prototyping, rapid and series tooling, manufacturing, and assembly of plastic and metal components,…
Serves B2B customers in industrial markets, including product designers, OEMs and manufacturers needing a partner for prototypes through high-volume production, assembly and ship-to-line supply.
Financial Health
StableStable · -13% CAGR over 2y
Location
SYNERGY PLASTICS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plastic injection moulding services, producing small and large components for sectors including horticulture, industrial, construction and medical. Offers tooling sourcing, technical…
Serves UK businesses needing plastic components, including customers in horticulture, industrial, housewares, agriculture, construction and medical sectors, from new product developers to firms…
Financial Health
StableStable · -69% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides advanced manufacturing services including CNC machining, injection moulding, metal fabrication and welding, and 3D printing. Offers prototyping, design‑for‑manufacture support, and low‑ to…
Serves engineering and procurement teams at B2B manufacturers in aerospace, automotive, electronics, hydrogen/fuel cell, electrolyzer, mining and industrial sectors, from prototyping projects to…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
Y C Plastics Manufacturing Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures thermoplastic components using vacuum forming, CNC machining and fabrication. Provides tool design, 3D CAD development, trimming and assembly services, producing plastic parts from…
Serves B2B industrial manufacturers across a broad range of sectors, particularly engineering or production teams needing outsourced thermoplastic component development, tooling and manufacture for…
Financial Health
HealthyHealthy · -4% CAGR over 5y
Location
DRUMLORD LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides rapid prototyping and modelmaking services for product development using technologies such as stereolithography (SLA), selective laser sintering (SLS), Figure 4 3D printing, and vacuum…
Serves UK design and manufacturing businesses developing products, including teams in medical, automotive, aerospace, and health and beauty sectors seeking prototype and small-batch production…
Financial Health
StableStable · 2% CAGR over 4y
Location
SPM PLASTICS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -2% CAGR over 4y
Location
Unique Polystyrene Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · 0% CAGR over 3y
Location
TJM LASER LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
J Price Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsManufactures industrial rubber products including moulded components, seals, grommets, gaskets, pads and anti‑vibration mounts. Provides tooling design, material selection and low‑ to medium‑volume…
Serves UK manufacturers of all sizes, especially low- to medium-volume buyers, plus defence/MOD, marine and shipbuilding, industrial equipment and compressor sectors, alongside sports clubs,…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
D B MOULDINGS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides bespoke plastic injection moulding services, producing custom plastic components and replacement parts. Also designs and manufactures tooling and moulds, supplying plastic moulded products…
Serves UK businesses needing custom plastic components, replacement parts or tooling, from small one-off buyers to larger companies requiring ISO-regulated production.
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
B W M Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, manufactures and installs uPVC and aluminium glazing products for residential and commercial buildings, including windows, entrance and bifold doors, roof glazing and curtain walling, and…
Serves both residential homeowners and commercial project clients needing glazing products for domestic, commercial and bespoke projects across South Wales and the South West of England.
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
Interframe (South West) Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsManufactures PVCu window, door and conservatory systems for the trade, including bi-fold, patio, composite and French doors. Supplies double‑glazing products and related ancillaries such as sealants,…
Serves B2B trade customers in the double-glazing and building products sector, including window and door installers, contractors and trade counter buyers needing PVCU systems, ancillaries and…
Financial Health
WeakWeak · -7% CAGR over 3y
Location
Technovent Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures materials and components for medical and maxillofacial prosthetics, including medical‑grade silicones, adhesives, removers, colouring agents, magnetic retention systems, ocular…
Serves maxillofacial and ocular prosthetic laboratories, anaplastologists, prosthetists, hospitals and clinics, plus medical product distributors in Europe, America, Asia and other regions.
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
PREMIER PLASTIC SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -10% CAGR over 4y
Location
PUMP PAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
R & P Windows Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures and supplies residential glazing products including uPVC windows, entrance and patio doors, Palladio composite doors, bi‑fold doors, conservatories and roof lanterns. Provides product…
Serves homeowners and trade installers seeking windows, doors, conservatories, patio and bi-fold doors, roof lanterns and glass, with retail enquiries and trade applications.
Financial Health
WeakWeak · -2% CAGR over 2y
Location
POLYMER TRADING (SOUTH WALES) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · Hiring · 49% CAGR over 3y
Location
STANDARD SIGNS & TRAFFIC SYSTEMS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures and supplies road traffic signs, street name plates, commercial and safety signage. Provides design, production and installation of illuminated and temporary signs, vehicle chevrons and…
Serves local authorities, highways contractors, trade sign buyers, commercial businesses and private customers across public-sector, B2B and B2C markets.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
ELITE WINDOW SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 5y
Location
JASON CARL MORGAN LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Kest Services Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Silmix Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures and supplies custom silicone rubber compounds, including high‑consistency silicone, silicone sponge, fluorosilicone and specialty blends. Provides formulation development, colour…
Serves B2B manufacturers and product developers in automotive, aerospace, medical, food and other industrial sectors, particularly those needing custom silicone compound materials and technical…
Financial Health
StableStable · 0% CAGR over 2y
Location
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How Cardiff Rubber And Plastics companies work and how to sell to them
What they do
Cardiff-area rubber and plastics manufacturers earn revenue from repeat production runs, tooling or set-up charges, fabrication labour, material mark-ups and, in some cases, design-for-manufacture support. The commercial unit is usually a component, batch, pallet, roll or agreed call-off schedule, with pricing shaped by polymer grade, cycle time, scrap allowance, machine hours and delivery cadence. Smaller jobs may start with quotation-led prototyping or repair work; larger customers often lock in tooling ownership, specifications and replenishment rules. Services sit close to manufacturing rather than consultancy: CAD adjustments, mould maintenance, finishing, assembly, packing and documentation are often bundled around the physical product.
Who they sell to
Most buyers are operations-led businesses that need parts, packaging or materials to keep their own production, installation or distribution activity moving. Typical contacts include procurement managers, operations directors, engineering managers, production planners, packaging technologists and quality managers. Contract size varies from one-off maintenance or fabrication work to repeat supply agreements tied to forecast volumes, with shorter cycles for standard materials and longer qualification periods where parts affect safety, fit or customer audits. Procurement is usually direct and quotation-led, though larger manufacturers and public-facing supply chains may use approved-supplier lists, framework-style agreements or formal RFP processes.
What they buy
Rubber and plastics producers tend to spend on systems and services that improve factory control, traceability and utilisation. Relevant software categories include quoting, CRM, ERP or MRP, stock control, quality management, maintenance scheduling, shop-floor reporting, energy monitoring and document management. Outside software, common needs include tooling support, machinery servicing, accountancy, insurance, employment law, waste and recycling services, freight, packaging, health and safety advice, and recruitment for machine setters, toolmakers, production supervisors and quality staff. Infrastructure spend often clusters around power supply, compressed air, extraction, fire safety, warehousing, forklifts and temperature or contamination controls where material handling is sensitive.
Why and how to sell to them
Rubber and plastics buyers tend to evaluate suppliers when margin pressure exposes avoidable waste, late deliveries, machine downtime or weak production visibility. Useful triggers include a new production line, a customer audit, a move into higher-specification materials, a repeat contract win, a change in operations or finance leadership, or hiring for production and quality roles. Outbound usually works better when it starts with production economics rather than generic growth language: lower scrap, fewer re-quotes, shorter changeovers, cleaner documentation, clearer job costing, better stock accuracy or lower energy use. Messages should acknowledge practical constraints such as shift patterns, tooling ownership and the cost of disrupting live orders.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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