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Plastics Companies in Portsmouth: 46 Active Firms (2026)
Rubber and plastics manufacturers in Portsmouth make polymer components, packaging and fabricated materials for regional supply chains.
Purchasing usually sits with operations, procurement and engineering teams rather than general office buyers. Local suppliers tend to serve manufacturers, distributors and project-led industrial customers that need repeatable components, packaging runs, moulded parts or fabricated materials tied to physical production schedules. Engagements are more likely to involve batch work, framework supply or make-to-order production than one-off retail transactions. The commercial pattern is practical: site-based production, measurable UK revenue, customer qualification around materials and tolerances, and relationships that depend on delivery reliability as much as price.
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Portsmouth has 46 actively trading rubber and plastics manufacturers, giving the local market a compact production base rather than a broad national cluster. Reported headcount totals 518 employees, which points to a sector made up mainly of small and mid-sized operating sites rather than very large plants. For researchers, that makes customer concentration and site-level activity worth checking: a single contract change, relocation or capacity constraint can matter more in this geography than it would in a larger manufacturing region.
Polymer production carries practical compliance demands around product specification, workplace safety, environmental controls and waste handling. Packaging and component customers often pass these obligations down through supplier questionnaires, audit rights and traceability requirements, especially where materials are used in industrial or regulated end markets. Portsmouth’s position as a coastal manufacturing and logistics area also makes premises, transport access and storage conditions part of the operating context. The market structure is therefore shaped less by consumer branding and more by qualification processes, repeat purchasing and the ability to meet documented material standards.
Future movement appears likely to be incremental. Local manufacturers tend to compete on short production runs, repeat customer relationships and proximity to regional buyers, while larger contracts usually require evidence of consistent quality systems and dependable capacity. Early-commercial entrants may find room in specialist fabrication or niche component work, but scale-up scarcity is likely to persist where investment in machinery, premises and skilled operators is required before revenue follows. Consolidation remains plausible where succession issues, customer overlap or under-used equipment create practical reasons for combining operations.
46
Active firms
2026
3
Above £5M
reported revenue
4
New since 2022
recent incorporations
Key facts
About 6% of the trading cohort reports turnover above £5M (3 of 46 firms) — the rest sits below that revenue band.
8% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
Portsmouth rubber and plastics manufacturers serve nearby production, logistics and repair supply chains.
Typical work spans polymer components, packaging, fabricated materials and related conversion or fabrication.
Repeat-order purchasing tends to put weight on tooling, material specification and local delivery, not just unit price.
The local market appears fragmented, so buyers may find specialist capacity before they find scale.
Top Portsmouth Plastics companies
MAGMA GLOBAL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and manufactures carbon fibre reinforced composite pipes for subsea oil and gas applications. Produces m‑pipe systems used in risers, jumper spools and auxiliary lines for offshore drilling…
Sells to oil and gas operators, offshore drilling contractors and subsea engineering contractors involved in exploration and production, particularly teams specifying subsea risers, jumpers and…
Financial Health
WeakWeak · Hiring · 16% CAGR over 2y
Location
HENLEYCRAFT LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsManufactures glass‑reinforced plastic (GRP/fibreglass) composite mouldings and components. Provides design support, CAD, pattern making, 3D printing, prototyping, mould production, and small to large…
Serves B2B customers requiring GRP composite components, including leisure-sector manufacturers such as boat and caravan producers, and organisations commissioning bespoke items, prototypes or…
Financial Health
WeakWeak
Location
ORL LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures construction and outdoor products from recycled plastic, including plastic lumber boards, posts, fencing, picnic tables, benches, planters, pallets and hoarding systems for use in…
Serves B2B and public-sector buyers including local authorities, NHS estates, pub chains, construction and infrastructure firms, agricultural and equestrian operators, garden centres, and decking,…
Financial Health
StrongStrong
Location
HAMPSHIRE SIGNS & PLASTICS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides plastic fabrication services, designing and manufacturing bespoke acrylic and plastic products including boat windows and marine components, display cases, storage tanks, retail guards, and…
Serves businesses and boat owners, including marine and yacht operators, scientific, pharmaceutical and electronics organisations, museums, exhibitions, retailers, and commercial users of industrial…
Financial Health
DistressedDistressed · -7% CAGR over 4y
Location
ABBEY POLYTHENE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -68% CAGR over 4y
Location
B3 Passenger Care Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures and supplies PTFE- and silicone-coated conveyor belts, composite belting materials, and self-adhesive tapes, and provides on-site installation and fitting services for industrial…
Serves OEMs and industrial end users in food processing, textiles, packaging, pharmaceuticals, chemicals, UPVC windows, rubber extrusion, floor covering, automotive, screen printing and can…
Financial Health
WeakWeak · -29% CAGR over 2y
Location
ENL GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures plastic injection‑moulded components and associated tooling. Provides in‑house product design, mould tool engineering and high‑volume production, with warehousing and delivery of…
Serves B2B manufacturers in aerospace and defence, medical and bioscience, electronics, automotive and logistics, including NHS equipment suppliers and major car manufacturers across Europe.
Financial Health
StableStable · -69% CAGR over 4y
Location
IMPREG (UK) Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDevelops and manufactures glass‑fibre reinforced CIPP (cured‑in‑place pipe) liner systems used in trenchless rehabilitation of sewer and pipeline infrastructure, supplying UV‑curable liners and…
Sells to B2B customers and partners in the global infrastructure rehabilitation industry, especially organisations involved in trenchless pipe and sewer rehabilitation.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
ENL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures plastic components and associated tooling, including moulded plastic parts and the design and production of tools and moulds used in the manufacture of plastic products for industrial…
Financial Health
StableStable · -69% CAGR over 4y
Location
A2R TOOLING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures injection moulding tools and plastic components for the automotive industry. Provides mould design, prototype development, high- and low-volume mould production, tooling…
Serves automotive OEMs, luxury car manufacturers and Tier 1 suppliers needing injection-moulded plastic components and tooling support, primarily across the UK and European supply chain.
Financial Health
StrongStrong · Growing, Hiring · 35% CAGR over 4y
Location
GARDINER GRAPHICS GROUP LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Remas HDG Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns, manufactures and repairs carbon fibre components. Provides bespoke parts, reverse engineering and composite processing for motorsport teams, luxury and performance cars, marine applications,…
Serves B2B and high-end private clients in motorsport, exotic automotive, marine, medical, film and TV, and private aviation, including race teams, luxury car owners, yacht owners, and buyers for…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 4y
Location
TRIPLE DIMENSION LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -10% CAGR over 4y
Location
G3S GROUP LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsOperates a group of businesses involved in investing in and acquiring small to medium-sized companies, and manufacturing and supplying printable films, lamination and encapsulation materials,…
Serves B2B customers including owner-managed UK SMEs seeking investment or acquisition, print and label industry distributors across the UK and Europe, industrial materials buyers, security document…
Financial Health
StableStable · -44% CAGR over 5y
Location
GARDINER GRAPHICS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
CPA Products Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · 0% CAGR over 1y
Location
CPM Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures plastic injection moulds and provides injection moulding services. Offers prototype and production mould making, insert and overmoulding, multi‑cavity tooling, machined…
Serves product inventors, designers, developers, manufacturers and plastic injection moulding companies across construction, consumer, transport, film and TV, industrial, life science, medical,…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
ROOKERY AND ORCHARD FARMS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plastic injection moulding services, producing plastic components and assemblies for industries such as electronics, marine, lighting and construction. Offers product design, tool…
Serves B2B customers across the UK and internationally, including electronics, lighting, fluid control, marine, promotional products, construction, safety equipment and medical firms needing plastic…
Financial Health
StableStable · -68% CAGR over 4y
Location
Tek-Tanks Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures and supplies plastic tanks and custom plastic fabricated products, including water, waste and fuel tanks for marine, vehicle, agricultural and industrial applications. Also provides tank…
Sells to trade customers and businesses needing plastic tanks or fabricated products, including marine, agriculture, horticulture, transport, vehicle conversion, rail, medical and welfare sectors, as…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 5y
Location
REDIWELD TRAFFIC PRODUCTS LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDesigns and manufactures traffic management and road safety products, including speed cushions, raised tables, traffic islands, kerbing systems, cycle lane separators, bollards, verge markers, and…
Serves local authorities, highways and transport contractors, schools, site operators and distributors across public and private sectors involved in road safety, traffic management, cycle…
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
KEITH PAYNE PRODUCTS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures custom rubber and non‑metallic gaskets, seals and rubber mouldings. Provides gasket design, prototyping, material selection and high‑ or low‑volume production using materials such as…
Serves UK B2B customers and OEMs across agriculture, automotive, HVAC, filtration, electrical, food, hydraulic, marine, military, pharmaceutical, process plant, pump and water sectors.
Financial Health
StableStable · Hiring · 10% CAGR over 2y
Location
Advanced Plastics (South) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides design, development and manufacture of technical plastic components using injection moulding. Produces moulded parts for sectors including automotive, HVAC and filtration, and supports…
Sells to business customers, particularly blue-chip manufacturers and product companies in the automotive, HVAC, filtration and technical plastics sectors seeking injection moulding partners.
Financial Health
HealthyHealthy · -12% CAGR over 2y
Location
Southbourne Rubber Company Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures precision rubber and elastomer sealing components including O‑rings, grommets, extrusions and custom moulded parts. Provides rubber-to-metal bonding, materials development and…
Serves B2B and public-sector customers in aerospace, defence, medical, marine, energy and engineering, including commercial and military aerospace platforms, MOD/DoD supply chains and specialist…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
OKW Enclosures Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures plastic and aluminium enclosures and tuning knobs for electronic equipment. Supplies standard and customised housings including handheld, DIN rail, wall‑mount and instrument cases, plus…
Sells to B2B OEM electronics manufacturers, product designers and engineering teams needing standard or customised enclosures and control knobs for electronic devices and instruments.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
POLSER UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures glass‑reinforced plastic (GRP/FRP) sheets and panels, including corrugated roofing, hygienic wall and ceiling panels, door skins and structural laminates, used in construction, cooling…
Serves B2B buyers in construction, cooling tower manufacturing, agriculture and livestock, hygiene and food facilities, automotive/RV manufacturing, and highway or advertising sectors.
Financial Health
StrongStrong
Location
KCC LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -5% CAGR over 4y
Location
Fenwood Bowen Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures plastic components using vacuum forming and CNC machining. Provides prototyping, tooling, trimming and assembly services, producing industrial covers, trays and custom…
Sells to businesses needing plastic components and formed parts, from family-run firms to blue chip corporations. Serves product development and manufacturing teams in sectors including automotive,…
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsManufactures and supplies silicone rubber products including tubing, hoses, extrusions, mouldings, O‑rings, seals, gaskets, sheeting and cord. Provides silicone compounds and fabrication services for…
Serves B2B manufacturers and engineering buyers worldwide in automotive/F1, pharmaceutical, energy, food and beverage, aerospace, rail, HVAC, construction, dairy/agriculture, medical and domestic…
Financial Health
DistressedDistressed · -4% CAGR over 5y
Location
FLEXITEC STRUCTURES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and manufactures flexible industrial fabric products, including potable and non‑potable water tanks for aid agencies, aircraft covers, inflatable buildings, tension structures, reservoir…
Sells B2B to emergency aid agencies, aerospace manufacturers and airlines, plus industrial, utilities and infrastructure organisations requiring flexible storage, cover, flood defence or temporary…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
Bulte Plastics (UK) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · -21% CAGR over 3y
Location
RUNFOLD PLASTICS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures custom dip‑moulded flexible PVC plastic components. Products include electrical shrouds, cable and battery terminal boots, protective caps, bellows, grips, towball covers, and medical…
Sells to businesses in electrical, medical and healthcare, industrial and transport sectors needing custom dip-moulded plastic parts, plus some healthcare product buyers. Serves OEMs, equipment…
Financial Health
HealthyHealthy · 1% CAGR over 4y
Location
MIMTEC LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures thermoformed plastic components using vacuum forming, pressure forming, twin‑sheet moulding and drape forming. Provides design assistance, tool design and manufacture, digital…
Serves B2B customers across aerospace, scientific instruments, transport, vending and retail/point-of-sale sectors, including manufacturers needing project support from concept through production.
Financial Health
StableStable · -67% CAGR over 4y
Location
LANSA U.K. LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
EVANS SHIMS & GASKETS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsManufactures and supplies precision shims, gaskets, insulating materials, shim stock and RFI shielding components. Provides thermal management and shielding products used in sectors including…
Serves B2B customers in the UK and internationally across aerospace, automotive, electronics and control systems, engineering, optical, power generation, pumping systems and future-technology sectors.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
Location
Butser Rubber Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
COVE PLASTICS LIMITED
Trajectory
5y · 2021–NowFinancial Health
Insufficient historyInsufficient history
Location
THE COMPOSITES SHOP LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Marine & Industrial Plastics Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
MICRO PLAS MOULDINGS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -10% CAGR over 4y
Location
License Plate Workshop Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
WeakWeak
Location
Hawk Marine Products Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
D & G Moulding
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
PUFFIN PLASTICS RETAIL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -4% CAGR over 4y
Location
Tile Fixer Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Admiral Tapes Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -70% CAGR over 4y
Location
BRP Machining Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures precision‑engineered carbon fibre composite components. Provides composite fabrication and machining services, supporting companies with the development and production of…
Serves B2B customers, including engineering-led companies requiring precision carbon fibre component suppliers.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
PUFFIN PLASTICS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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How Portsmouth Plastics companies work and how to sell to them
What they do
Revenue usually comes from production capacity rather than intellectual property alone: repeat component runs, packaging work, fabricated polymer parts, material conversion and related finishing. Pricing tends to combine unit rates with set-up charges, material pass-throughs, tooling contributions and delivery terms, with margins affected by waste, rework and machine utilisation. Smaller Portsmouth plastics firms are often selling certainty as much as output, particularly where customers need tolerances, colour matching, batch traceability or documented material performance. Service work can sit around the manufactured item too, including design-for-production advice, prototyping, storage, call-off supply and adjustments to suit a customer’s production timetable.
Who they sell to
Most buyers are business customers with physical supply chains: manufacturers, distributors, engineering contractors, packaging users and industrial project teams. The practical decision-makers tend to be operations managers, procurement leads, production engineers, quality managers and owner-directors, with finance involved where tooling, stockholding or longer supply commitments affect cash flow. Smaller jobs may be won through direct quoting and repeat purchasing, while larger or more regulated end customers often require supplier approval, questionnaires, sample runs and documented quality checks. Sales cycles are usually shorter when the material and specification are familiar, and longer when a new part, tool or customer audit is involved.
What they buy
Most Portsmouth plastics firms tend to spend on materials, machinery upkeep, tooling, production planning, quality control and transport before office software becomes the main issue. Relevant sales categories include inventory and stock control, quoting and job costing, manufacturing ERP, CRM for repeat account management, traceability systems, health and safety support, environmental and waste services, energy management, insurance, accountancy and recruitment for machine operators or production supervisors. Marketing services may fit firms trying to win more regional industrial work, but operational proof matters more than brand language. Suppliers that can connect their offer to scrap reduction, uptime, audit evidence or faster quoting usually have a clearer entry point.
Why and how to sell to them
Buying intent tends to appear around capacity pressure, new machinery, customer qualification, a move into larger contract work, succession planning or a change in production leadership. Pain points are practical: late material deliveries, rising input costs, downtime, rejects, storage constraints, documentation requests and the need to keep skilled operators. Outbound messages should be specific to the production setting, not generic manufacturing copy. A credible approach might reference batch control, margin leakage, supplier audit preparation, waste handling or quote turnaround, then offer a low-friction next step such as a site-fit assessment, process review or comparison against similar small and mid-sized manufacturers.
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.
Also in Portsmouth
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Frequently asked questions
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