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Defence and Security Companies in Leeds: 27 Active Firms (2026)
Defence and security companies in Leeds provide protection, intelligence, resilience and secure operational services across the metropolitan area.
Buying centres tend to sit in public-sector security teams, regulated-industry risk functions, critical-infrastructure operations and prime-contractor supply chains, rather than in general corporate services. Sales are usually consultative and qualification-heavy: buyers want evidence of assurance, continuity planning, intelligence handling and operational resilience before procurement moves. The typical Leeds supplier in this group looks lower-mid-market rather than venture-scale, with specialist teams selling project retainers, managed services or embedded advisory work to B2B and B2G customers. Engagements appear more relationship-led than self-serve, reflecting risk sensitivity and the need to fit into larger delivery chains.
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Leeds has 27 actively trading defence and security companies in this cohort, making it a narrow market rather than a broad local supplier base. Reported employment totals 158 people, so the footprint is visible but not labour-intensive by the standards of operational services. Revenue scale is also uneven: 6 firms are above £5M turnover, while 3 have been incorporated since 2022. That shape points to a specialist local market with a handful of larger suppliers and a small recent-formation layer, rather than a city cluster dominated by new entrants.
Public-sector and critical-infrastructure demand gives the Leeds market a compliance-heavy operating model, even where firms are not themselves directly regulated. Buyers tend to test supplier assurance, personnel vetting, secure information handling, incident response and continuity planning before awarding work. Prime-contractor routes also matter: smaller specialists can enter larger defence or security programmes as subcontractors, but that brings documentation, audit and flow-down contractual obligations. For researchers, the practical dividing line is often less about service type and more about whether the supplier can pass procurement, assurance and confidentiality requirements in regulated or government-adjacent environments.
Development in Leeds appears likely to be incremental rather than surge-led. The mix leans towards specialist service providers with lean payrolls, so expansion tends to come through contract wins, subcontracting relationships and recruitment into delivery teams, not broad product-led scaling. Buyers in government-adjacent and regulated markets have been placing more weight on resilience, assurance and continuity, which favours suppliers able to evidence repeatable controls. Consolidation may also remain a route for small specialists that need access to larger bid teams, although local independence still matters where trust, proximity and domain knowledge shape procurement.
27
Active firms
2026
6
Over £5M
reported turnover
3
New since 2022
recent incorporations
Key facts
About 22% of the trading cohort reports turnover above £5M (6 of 27 firms) — the rest sits below that revenue band.
11% of the cohort was incorporated since 2022 (3 firms), so a sizeable share is in its first few filing cycles.
Leeds defence and security suppliers serve buyers concerned with protection, intelligence, resilience and secure operations.
Demand is tied to operational continuity and risk management, rather than discretionary software or general business support.
Procurement in this segment tends to place weight on assurance, contract delivery and incident response capability.
Top Leeds defence and security companies
TANGLEWOOD COMMERCIAL DEVELOPMENTS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering and logistics support services for defence and commercial sectors, including integrated logistics support and through‑life sustainment management. Offers bid and tender…
Serves B2B customers in defence and commercial sectors, including defence contractors, technology product suppliers, businesses pursuing defence contracts, and organisations needing specialist…
Financial Health
StrongStrong
Location
KVH MEDIA GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and supplies satellite communication and connectivity systems for maritime, land mobile, and government use. Offers VSAT and hybrid satellite‑cellular terminals, network management…
Serves B2B, B2C and public-sector customers, including commercial maritime operators, yacht and leisure boat owners, military and government users, and commercial vehicle or land-mobile fleets…
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
PROPUBLIC LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business change and transformation consultancy focused on the public sector, particularly policing. Offers organisational change support, inspection review preparation, and specialist…
Serves UK public sector organisations, especially police forces and law enforcement bodies, needing business change, inspection review support, or security-cleared specialist resourcing.
Financial Health
StableStable · Hiring · 22% CAGR over 2y
Location
C.P.L PRECISION ENGINEERING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides CNC precision engineering and subcontract machining services, offering design input, prototyping and high‑volume production of finished components. Supplies machined parts for sectors…
Serves B2B OEMs and manufacturers needing precision-engineered components, particularly in defence, space, telecommunications, audio, autosport and safety-related railway products.
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 4y
Location
3D PLUS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures radiation‑tolerant microelectronic components and system‑in‑package modules for space and aerospace applications, including memory devices, interfaces, power management…
Serves B2B customers in the global space, aerospace, defense, security and avionics sectors, including satellite manufacturers, mission operators and government space/defense programmes.
Financial Health
HealthyHealthy · -16% CAGR over 4y
Location
Saras Technology Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures RF and microwave amplifiers, filters and subsystems operating up to 40 GHz. Produces linear and pulsed power amplifiers and cavity, ceramic and printed filters, including…
Serves B2B customers including major OEMs and defence, aerospace, telecoms, surveillance/security and broadcast organisations worldwide.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
SPARTAN DEFENCE LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
SW Projects Consulting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Lemonwood Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
SAFEGUARD ARMOUR LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and sells ballistic body armour and protective equipment, including bulletproof vests, plate carriers, ballistic plates and helmets. Products are supplied for military, police, security and…
Serves military units, police and SWAT teams, security professionals, special forces, journalists and civilian buyers seeking ballistic protection, with worldwide consumer and organisational sales.
Financial Health
StableStable · 0% CAGR over 4y
Location
ARVILLE TEXTILES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsManufactures technical textile fabrics and products, providing design, weaving, finishing, coating and fabrication services. Produces specialised materials such as protective fabrics, filtration…
Serves B2B customers worldwide, including large multinationals and specialist companies in defence, aerospace, automotive, pharmaceutical, food, medical, industrial manufacturing and filtration…
Financial Health
StableStable · -62% CAGR over 5y
Location
AQUALAND LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures dry suits for diving, military, and marine safety applications. Produces made‑to‑measure and OEM drysuits, drybags for military and commercial use, and neoprene products and components,…
Serves recreational and professional divers, military and marine safety organisations, and commercial customers needing OEM drysuits, drybags or bespoke neoprene components.
Financial Health
WeakWeak · -3% CAGR over 2y
Location
G B PRECISION LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides precision engineering and CNC machining services including grinding, wire and die-sink EDM, high-speed machining, milling and turning, producing complex components and sub-assemblies for…
Sells to businesses needing complex precision components and sub-assemblies, particularly in aerospace, motorsport, packaging, defence and specialist manufacturing, including other machining…
Financial Health
WeakWeak · 0% CAGR over 3y
Location
Rosehill Polymers Group Holdings Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsManufactures and supplies polyurethane and other polymer materials and products used in infrastructure and industrial applications, including road safety barriers, rail crossing systems, drainage…
Serves infrastructure, construction and industrial buyers, including highways and rail authorities and contractors, defence and security organisations, offshore energy operators, drainage…
Financial Health
HealthyHealthy
Location
Crown Integrated Services Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides programme development and delivery services for international government security projects. Offers programme management, security research and analysis, specialist personnel, and…
Serves government agencies and public/private sector organisations involved in international security, policing, technology, environment, audit and assurance programmes, including universities, NGOs…
Financial Health
StableStable · -85% CAGR over 2y
Location
North Fire Engineering Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsDesigns and manufactures military light mobility vehicles (LMVs) and armoured utility vehicles for defence organisations. Develops mission vehicles with integrated technology and engineering for…
Serves NATO member-state military organisations, defence procurement teams, and military supply-chain buyers seeking specialist suppliers for battlefield mobility requirements.
Financial Health
StableStable · -25% CAGR over 3y
Location
PINNACLE ATLAS LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
WeakWeak · 0% CAGR over 1y
Location
Wyedean Weaving
Manufactures military uniforms, braid, insignia, regalia and ceremonial accoutrements. Provides contract manufacturing, tailoring, product support, research and development, specification writing,…
Serves defence and public-sector buyers, including the British Ministry of Defence, Royal Navy, British Army, RAF, cadet forces, blue-light services, UN-related aid programmes, and film and…
Financial Health
Insufficient historyInsufficient history
Location
Energy Containment Concepts Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, manufactures and installs shooting ranges and firearms training facilities, including range fit‑outs, shoot houses, modular and forensic ranges. Produces bullet trap systems, armoury and…
Serves organisations operating shooting facilities, including firearms training centres, forensic range operators and clients needing range fit-outs, shoot houses, armouries and range maintenance in…
Financial Health
StableStable · 0% CAGR over 4y
Location
N & G Mast Hire Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsManufactures and supplies telescopic masts, mounting systems and related accessories for communications, CCTV, lighting, photography and surveillance applications. Provides custom mast systems,…
Serves UK and international commercial, government and defence buyers, including emergency services, security/CCTV operators, communications users, sports analysis teams, photographers, filmmakers…
Financial Health
HealthyHealthy
Location
Rathera Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electronic engineering and product development services including analogue and digital circuit design, embedded microcontroller and SoC development, RF and microwave design, test automation,…
Serves businesses and organisations in commercial, industrial, scientific, security and defence markets, particularly teams developing electronics-based products from concept to production.
Financial Health
StrongStrong · Hiring · 26% CAGR over 4y
Location
DB Control Systems Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures RF and microwave equipment including travelling wave tube amplifiers, microwave power modules, power supplies, synthesizers, receivers, switches, and integrated microwave…
Serves the US military and major defence contractors worldwide, including buyers involved in ground mobile, maritime and airborne defence and commercial platforms.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
MICHAEL WRIGHT & SON LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsManufactures technical narrow fabrics including webbings, tapes and elastics, and develops engineered textile structures and 3D woven composite reinforcements. Provides dyeing, finishing, testing and…
Serves B2B clients worldwide in defence, aerospace, aviation, fire safety, fall arrest, healthcare, sports, leisure and industrial sectors, including manufacturers and technical product developers.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
Location
ENVIRONMENTAL DEFENCE SYSTEMS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and supplies specialist safety and protection products including FloodSax sandless sandbags for flood control and spill absorption, AvSax lithium‑battery fire containment bags for aircraft,…
Sells to B2B, public sector and consumer buyers, including airlines, armed forces, emergency responders, facilities teams and property owners needing flood, spill, battery-fire or blast protection.
Financial Health
StableStable · -66% CAGR over 4y
Location
UK SIMULATORS LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsSupplies flight simulation hardware and systems including professional flight simulators, cockpit consoles, flight controls, avionics panels, motion platforms and visual display setups. Also provides…
Serves flight training organisations, aviation schools, universities, colleges, schools, cadet and STEM education units, military aviation users, and serious home flight-simulation enthusiasts…
Financial Health
HealthyHealthy · Hiring · 67% CAGR over 2y
Location
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How Leeds defence and security companies work and how to sell to them
What they do
Revenue usually comes from advisory projects, retained risk support, security testing, assurance work, incident response, training, specialist staffing and software-enabled monitoring. Pricing is typically a mix of fixed-fee assessments, day-rate consultancy, retainer cover and service-level contracts. Smaller discovery assignments can become multi-month delivery work when the buyer needs evidence packs, operating procedures or implementation support. Leeds firms in this category are less likely to look like self-serve software businesses; most sell expertise, controlled delivery and access to people who understand sensitive environments. Margins depend on utilisation, bid discipline and the ability to reuse methods across clients without treating each engagement as wholly bespoke.
Who they sell to
Customers are usually government-adjacent teams, regulated-industry risk functions, critical-infrastructure operators and larger contractors that need specialist support inside a wider programme. The practical buyer may be a CISO, security director, head of risk, operations director, procurement lead or programme manager, with finance and legal teams involved once the work touches continuity, liability or confidential information. Sales cycles tend to be longer than ordinary B2B services because qualification, assurance checks and contract terms matter. Routes to market are commonly direct relationships, public-sector frameworks, formal RFPs and subcontracting through larger delivery partners. Typical buyers value references, delivery evidence and clear boundaries of responsibility.
What they buy
Spend tends to cluster around tools and services that help them sell, evidence and deliver controlled work. Common software categories include CRM, bid management, project delivery, secure document handling, finance, HR, workforce scheduling, compliance tracking, analytics and customer support. Delivery teams may also buy secure hosting, device management, monitoring, backup, identity controls and specialist data services, depending on how much sensitive information they handle. On the services side, these firms often need legal review, bid-writing support, insurance advice, accounting, recruitment, vetting administration, training and marketing that can work within cautious approval processes. Suppliers that understand procurement evidence usually have an easier conversation.
Why and how to sell to them
Commercial pressure often comes from slow procurement, audit burden, scarce specialist staff and the need to prove resilience before buyers commit. Defence and security buyers tend to evaluate vendors when they win a larger contract, enter a new framework, move from advisory into managed delivery, hire delivery leadership, or face tougher assurance requirements from a prime contractor or public-sector customer. Outbound is more credible when it is tied to one of those triggers rather than framed as a general efficiency pitch. Useful angles include reducing bid workload, shortening evidence gathering, improving utilisation, controlling project risk, protecting margins on fixed-fee work and making client reporting easier without weakening confidentiality.
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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