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Steel Manufacturing Companies in Plymouth: 36 Active Firms (2026)
Steel and metals manufacturers cut, form and fabricate metal components and assemblies for industrial customers in the Plymouth area.
Buying centres tend to sit with operations managers, engineering teams and procurement leads, especially where customers need dependable production capacity rather than catalogue supply. The buyer base is mostly B2B: construction contractors, marine operators, infrastructure suppliers, engineering firms and specialist manufacturers across South West England and wider UK supply chains. Engagements are usually drawing-led jobs, repeat purchase orders, repair or replacement work, and modest project packages. Selection tends to turn on production capability, shop-floor skill, lead time, inspection paperwork, and whether the supplier can handle small-batch work without losing control of tolerances or delivery dates.
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Plymouth has 36 actively trading steel and metals manufacturing companies in this list, making it a compact local production base rather than a broad regional cluster. Reported employment across the cohort totals 306 people, which points to a market built around owner-managed workshops and small factory teams. Only 1 company reports turnover above £5M, so revenue-scale operators are rare locally. A further 5 firms were incorporated since 2022, suggesting some recent formation, but the centre of gravity remains established industrial supply rather than a wave of newly formed manufacturers.
Market structure is project-led and specification-heavy: buyers often require material traceability, certificates of conformity, welding or finishing records, and insurance paperwork before awarding repeat work. Compliance exposure depends on the job rather than on a single authorisation regime. Structural steel, marine equipment, infrastructure components and engineered assemblies each carry different tolerance, inspection and documentation expectations. For smaller Plymouth-area suppliers, the practical constraint is often auditable process control: retaining skilled labour, logging materials, managing subcontracted finishing, and proving that work has been made to the customer’s drawings and purchase terms.
The local outlook appears steady rather than expansive. Demand tends to follow marine maintenance, construction cycles, infrastructure work and the replacement needs of nearby industrial customers, so order books can be lumpy even where relationships are long running. Scale-up scarcity may persist, partly because fabrication capacity depends on skilled labour, equipment, premises and working capital rather than software-like replication. Consolidation could occur through succession, customer concentration or the need to add finishing and assembly capability, but many firms are likely to remain workshop-led suppliers serving repeat industrial buyers.
36
Active firms
2026
1
Above £5M
Revenue threshold
5
New since 2022
Recent incorporations
Key facts
About 2% of the trading cohort reports turnover above £5M (1 of 36 firms) — the rest sits below that revenue band.
13% of the cohort was incorporated since 2022 (5 firms), so a sizeable share is in its first few filing cycles.
Plymouth-area steel and metals manufacturers cut, form and fabricate metal components and assemblies for industrial customers.
Engineering, marine, construction and industrial maintenance buyers often need nearby metalworking capacity for shorter production runs.
Metal grade selection, finishing requirements and tolerance control tend to shape procurement discussions in this segment.
The local supply base appears fragmented, so sales motions are likely to involve owner-managed fabricators as well as staffed industrial manufacturers.
Top Plymouth Steel Manufacturing companies
Metal Solutions (SW) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides bespoke metal fabrication and welding services, manufacturing staircases, fire escapes, gates, railings, balustrades, balconies, ducting, canopies, sheet metal components and structural…
Serves businesses and public-sector bodies in Plymouth, Devon and Cornwall, including food, pharmaceutical and construction companies, local councils, and customers needing bespoke metalwork for…
Financial Health
StableStable · Hiring · 17% CAGR over 2y
Location
QUALITY COMPONENT ENGINEERING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures metal structures and components and provides fabrication and precision engineering services. Offers CNC milling and turning, welding, architectural metalwork, steel framed buildings,…
Serves construction contractors, marine and civil engineering firms, facilities and maintenance teams, groundworks and utilities companies, architects, designers, schools, councils and commercial…
Financial Health
HealthyHealthy · 1% CAGR over 4y
Location
CUTLASS MECHANICAL ENGINEERING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides metal fabrication and cutting services, including water jet cutting, oxy‑fuel flame cutting, and CNC high‑definition plasma cutting. Designs, manufactures and installs custom steel,…
Serves commercial and industrial clients, contractors and project teams requiring custom metalwork or structural steel fabrication, mainly in Devon and Cornwall with national coverage.
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 5y
Location
Stainless Fabs Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsDesigns and fabricates bespoke stainless steel and non‑ferrous metal products for domestic and commercial projects, including balconies, balustrades, staircases, handrails, tanks and architectural…
Serves homeowners, architects, interior designers and commercial clients across South West England, including residential, hospitality, marine and laboratory project buyers.
Financial Health
WeakWeak · -15% CAGR over 2y
Location
ALDERMAN TOOLING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides precision sheet metal fabrication and engineering services, including laser cutting, punching, folding, welding, CNC turning and milling, tube bending, powder coating, and assembly of metal…
Serves B2B manufacturers and product developers in automotive, rail, construction, energy, power generation, IT and communications, from prototype-stage clients to full-scale production buyers.
Financial Health
StableStable · -2% CAGR over 4y
Location
Phoenix (316) Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides stainless steel and aluminium welding and metal fabrication services. Produces custom components and structures from drawings or templates for marine, leisure, and commercial applications,…
Serves marine trade buyers and boat owners, leisure operators such as swimming pools and health clubs, homeowners/DIY customers, and commercial clients needing security, street furniture,…
Financial Health
WeakWeak · 0% CAGR over 3y
Location
Allen Welding Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides pipeline welding and steel fabrication services, including installation and connection of gas pipelines and outlet pipework, P9 welding, hot tapping, and hydrostatic pressure testing. Also…
Serves B2B utility, engineering and construction clients, including gas network operators, industrial sites, property developers and contractors.
Financial Health
HealthyHealthy · -4% CAGR over 2y
Location
Entry Group UK Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures and installs industrial door systems including roller shutter, sectional and high‑speed doors. Also supplies and services automatic gates, traffic barriers, loading bay equipment, access…
Sells to businesses and commercial premises needing industrial doors, gates, loading bay equipment and access control, including warehouses, logistics sites, industrial facilities and…
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
Location
QC ENGINEERING SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Union Glass Balustrades & Balconies Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Newnham Engineering (Plymouth) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides precision engineering and CNC machining services, including 5‑axis machining, CNC milling, CNC turning and wire erosion. Manufactures high‑precision metal and plastic components to customer…
Serves B2B customers in demanding industries including defence, oil and gas, agriculture, leisure and construction, particularly organisations needing high-precision components made to specification.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
BIKEAWAY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures secure cycle storage systems including bike hangars, vertical and horizontal lockers, e‑bike charging lockers, wall hoops and stands. Also provides rental management and…
Sells primarily to B2B and public sector buyers, including local councils, housing associations, NHS trusts, rail organisations, the MOD and other businesses needing secure cycle storage, plus…
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
COATING SOLUTIONS (SW) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
WATERJET PROFILES PLYMOUTH LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
R B BUILDINGS (SW) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, manufactures and erects bespoke galvanised steel buildings for agricultural and commercial use. Provides farm and industrial buildings, storage and livestock facilities, cladding systems,…
Sells to agricultural, commercial and industrial customers needing steel buildings, including farms, livestock and grain operators, and buyers with structural steel requirements. Serves clients in…
Financial Health
StableStable · -70% CAGR over 4y
Location
WESTERN WATERJET LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides precision waterjet cutting and profiling services for industrial applications. Manufactures components from templates or CAD drawings and offers sheet metal guillotine cutting, press brake…
Serves businesses across the UK in manufacturing, engineering, construction, metalwork, tiling and stone sectors needing outsourced profiling, folding or CAD-supported fabrication from drawings or…
Financial Health
StrongStrong · Hiring · 15% CAGR over 4y
Location
M & H Laser Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides laser cutting and profiling services for metal components, processing mild steel, stainless steel and aluminium from CAD or PDF files. Also offers CNC press brake folding and rumbling to…
Serves businesses and individuals needing bespoke or batch metal components, including customers with CAD/PDF designs and product development projects, mainly in the South West and beyond.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 5y
Location
Hadley Engineering Group Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides metal fabrication and manufacturing services including powder coating, aluminium and stainless steel fabrication, and production of security fencing, gates and railings. Also offers tube…
Serves UK businesses, including industrial manufacturers, construction and security fencing buyers, and organisations in the South West, from R&D-stage projects to large-scale batch production.
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 4y
Location
100% STAINLESS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, fabricates and installs bespoke stainless steel architectural metalwork, including balconies, balustrades, staircases and handrails. Provides welding and finishing of marine‑grade stainless…
Serves homeowners, property owners and building project clients in the South West and beyond seeking bespoke stainless steel balconies, balustrades, staircases and handrails.
Financial Health
StableStable · -8% CAGR over 4y
Location
Atlantic Aero Engineering Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsSupplies and processes thin metal sheet and foil, providing precision laser cutting, slitting and CNC machining. Manufactures SMT stencil foils, frames, solder pallet materials and custom metal…
Serves B2B manufacturers in electronics, PCB assembly/SMT, battery technology and aerospace, including engineering and production teams from prototyping through production.
Financial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsSupplies and processes thin metal sheet and foil, providing laser cutting, CNC milling and coil‑to‑part manufacturing. Produces SMT stencil foils and frames, solder pallet materials, stainless steel…
Serves B2B manufacturers in electronics, PCB assembly, battery technology, aerospace and precision engineering, particularly teams needing thin-gauge metal foils, SMT materials and custom precision…
Financial Health
StrongStrong · Hiring · 77% CAGR over 4y
Location
UNDERHILL ENGINEERING (UK) LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · -60% CAGR over 2y
Location
F.W. YELLAND & SON (NORTHLEW) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures and erects steel frame buildings for commercial, industrial and agricultural use. Provides design, planning and structural engineering support, fabrication, refurbishment, mezzanine…
Serves commercial, industrial, leisure and agricultural organisations in Devon and Cornwall, including industrial property owners and farm businesses with building development needs.
Financial Health
StableStable · -11% CAGR over 4y
Location
UNDERHILL ENGINEERING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
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How Plymouth Steel Manufacturing companies work and how to sell to them
What they do
Most Plymouth steel manufacturers earn revenue through fabrication, forming, machining, repair, finishing and assembly work sold to other businesses. Jobs are often priced from drawings, weight, labour hours, material grade, finishing requirements and inspection effort, with margins shaped by scrap rates, rework and whether subcontracted processes are needed. Some revenue comes from repeat purchase orders for standard brackets, frames, guards or replacement parts; other work is project-led, tied to construction, marine or industrial maintenance schedules. The service shape is practical production capacity rather than a packaged product: skilled labour, workshop equipment, material sourcing and paperwork combined into a finished component or assembly.
Who they sell to
Typical customers are contractors, marine operators, facilities teams, engineering consultancies, plant owners and specialist manufacturers that need metalwork made or repaired to specification. Day-to-day contact often sits with project managers, site managers, workshop supervisors, engineers and procurement leads, while finance teams may become involved where payment terms, retention or insurance requirements matter. Smaller jobs can move through direct enquiry and quotation, especially where the supplier is known locally. Larger or riskier packages tend to involve drawings, revised estimates, method statements, site visits and purchase-order controls, so sales cycles are governed by project timing rather than by a fixed procurement calendar.
What they buy
Most steel manufacturing firms tend to spend on material supply, cutting and forming equipment, welding consumables, lifting and handling gear, workshop maintenance, transport, waste removal and subcontracted finishing. Administrative buying is often more fragmented: accounting support, payroll, insurance, health and safety advice, certification support, credit control and basic sales administration all matter, but may sit with owners or office managers rather than specialist teams. Software spend typically clusters around quoting, stock control, production scheduling, document management and finance systems. Recruitment support, apprenticeships and temporary skilled labour can also be relevant where order books stretch workshop capacity or succession planning exposes a skills gap.
Why and how to sell to them
Steel manufacturing buyers tend to evaluate suppliers when lead times slip, inspection paperwork becomes harder to manage, a new customer asks for tighter documentation, or a workshop adds equipment, premises or staff. Funding events are less central than operational triggers: a fuller order book, a site contract, a marine maintenance window, or the loss of a skilled employee can create urgency. Outbound messages usually land better when they speak to downtime, rework, cash tied up in stock, late payment risk, audit trails or quoting accuracy. Generic growth claims are less persuasive than a clear route to fewer missed deliveries, cleaner job records or faster conversion from enquiry to purchase order.
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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