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Defence Companies in Bristol: 31 Active Firms (2026)
Defence companies design, supply and support security, aerospace and mission-critical systems for customers in and around Bristol.
Buying centres in Bristol tend to sit around engineering programme delivery, aerospace and security supply-chain support, specialist technical services, and systems assurance for public-sector or prime-contractor customers. Sales are usually contract-led rather than self-service: buyers expect evidence of delivery capacity, compliance discipline, security handling and enough UK commercial substance to support long procurement cycles. Typical suppliers are compact technical teams working on defined work packages rather than volume software subscriptions, with engagement models shaped by statements of work, support agreements and framework-style procurement.
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Bristol has 31 actively trading defence companies in this list, making it a small, specialist local cohort rather than a broad industrial base. Reported headcount totals 453 people, which points to a cluster weighted towards compact engineering, support and programme-delivery teams rather than very large local employers. The commercial shape also looks mid-market by defence standards: some firms have crossed into higher-turnover contracting, while many appear to remain closer to specialist services and systems-support work.
Security-sensitive procurement sets much of the operating context. Suppliers need to evidence controls over information handling, personnel access, export-sensitive work and subcontractor management, even where they are not direct government contractors. Market structure is therefore less open than ordinary professional services: qualification, past performance and supply-chain position matter before price is tested. Bristol's defence base sits close to aerospace and national-security demand, so contracts often combine engineering delivery with audit trails, change control and documented support obligations.
Further development appears likely to favour firms that can keep specialist engineering teams billable while meeting heavier assurance expectations from security-sensitive customers. Newer entrants may find routes in through subcontracting and niche technical services, but long sales cycles tend to slow the path from capability to repeatable revenue. Scale-up scarcity is likely to persist where firms depend on project work rather than ownable systems or support contracts. Consolidation may also remain a feature, as larger contractors prefer suppliers with documented delivery history and manageable compliance risk.
31
Active firms
2026
6
Above £5M
revenue band
6
Recent incorporations
since 2022
Key facts
About 19% of the trading cohort reports turnover above £5M (6 of 31 firms) — the rest sits below that revenue band.
19% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Bristol defence suppliers tend to serve security, aerospace and mission-critical systems buyers rather than broad commercial procurement teams.
Systems support and product engineering often sit close together, so continuity of supply is a practical screening point for buyers.
The local market mixes specialist suppliers with higher-revenue systems and support businesses, which makes peer comparison less straightforward than in more standardised software categories.
Top Bristol defence companies
CERVUS DEFENCE AND SECURITY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops data analytics and simulation software for military training and operational analysis. Products such as Hive and Xcalibr collect and analyse training data, supporting live‑fire exercises,…
Serves UK, US and NATO military organisations, defence ministries, and defence-sector primes and SMEs involved in training, experimentation, operational analysis and readiness programmes.
Financial Health
HealthyHealthy · -89% CAGR over 2y
Location
4NL LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures systems and hardware that protect electronic equipment in harsh environments, including rugged display systems, electronic cabinets, multifunction consoles and cathodic…
Serves defence, naval and commercial marine organisations, including submarine and surface-ship programmes, land-based military systems teams, shipbuilders and systems integrators.
Financial Health
StableStable
Location
Intellium AI Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops secure artificial intelligence software for defence and government organisations. Products include BoostBot, a knowledge automation platform for classified air‑gapped environments, and…
Serves defence and government organisations, UK MoD programmes, and data-sensitive aerospace, manufacturing and engineering enterprises operating in classified, mission-critical or air-gapped…
Financial Health
StrongStrong · Growing, Hiring · 46% CAGR over 4y
Location
Radnor Range Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides independent testing and evaluation of weapons, ordnance, munitions and explosives, including ballistic and blast trials, armoured vehicle and material testing, UN series and insensitive…
Serves defence and security organisations, including public-sector military customers, armoured vehicle and materials manufacturers, weapons and munitions developers, drone/counter-drone teams, and…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 2y
Location
RAPTOR CONSULTANCY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides programme and project management, business change and technical consultancy services. Supports digital transformation, systems engineering and integration, training management, acquisition…
Serves public sector and private sector organisations, especially defence, cyber security, intelligence and security, emergency services, central government, and industry clients running complex…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
RISKAWARE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops scientific and analytical software and provides consultancy using data science, modelling, AI and systems engineering. Builds decision-support and intelligence tools for environmental…
Serves military, government, Tier 1 contractors and critical national infrastructure organisations facing environmental, human and security challenges, with customers spanning defence, space and…
Financial Health
StrongStrong · Growing · 2% CAGR over 4y
Location
Fowler's of Bristol (Engineers) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides precision engineering and manufacturing services including CNC sheet metalwork, presswork, precision machining, welding, fabrication and CAD/CAM design, producing component parts and…
Serves OEMs and supply-chain buyers in defence, aerospace, nuclear and renewables, including aircraft systems manufacturers, armed forces suppliers and major infrastructure projects such as Hinkley…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 2y
Location
X-innovations Technologies Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides industrial X-ray equipment and services for non-destructive testing, including digital X-ray imaging systems, linear accelerator X-ray generators, flat panel detectors, collimators and…
Serves B2B and public-sector customers needing industrial non-destructive testing, including defence, aerospace and nuclear organisations, government agencies, and large engineering or manufacturing…
Financial Health
StrongStrong · Growing, Hiring · 58% CAGR over 2y
Location
Dynamic Packaging Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures bespoke packaging, flight cases and containers for aerospace and defence equipment. Provides in‑house design, CNC‑based prototype and production manufacture, packing…
Serves aerospace and defence organisations, including MoD contractors and public-sector defence buyers, with demanding equipment logistics, storage and transport requirements.
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
Blu Wireless Technology Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsDevelops mmWave wireless communication technology and networking equipment providing multi‑gigabit connectivity. Supplies semiconductor and system products, baseband modems and software for…
Serves defence organisations, high-speed rail operators, transport infrastructure providers and mobility systems partners in complex, data-intensive communications environments.
Financial Health
StableStable · -12% CAGR over 1y
Location
DEEP MANUFACTURING LIMITED
Trajectory
1y · 2025–NowProvides large-format metal additive manufacturing using Wire Arc Additive Manufacturing (WAAM) systems. Produces large-scale metal components, rapid prototypes, and conducts materials testing for…
Serves B2B engineering and procurement teams in energy, maritime, aerospace, defence and subsea sectors needing large-scale, high-integrity metal component parts.
Financial Health
Insufficient historyInsufficient history
Location
THE BISON NETWORK LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
StrongStrong
Location
MACTAGGART SCOTT (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures mission-critical equipment and systems for naval and defence applications, providing engineering, production, testing, commissioning and through-life support for products…
Sells primarily to naval defence organisations and military procurement teams, serving defence-sector customers needing mission-critical maritime systems and through-life support. Also serves the…
Financial Health
StableStable
Location
CONSOLITE TECHNOLOGY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and manufactures night‑vision‑goggle (NVG) compatible lighting, filters and LED systems for military aircraft, naval vessels and vehicles. Provides lighting upgrades, testing and consultancy,…
Serves defence and aerospace customers, including armed forces, naval platform operators, shipbuilders, aircraft and military vehicle integrators, and defence contractors requiring NVG-compatible…
Financial Health
StableStable · -65% CAGR over 4y
Location
Optima Systems Consultancy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides systems engineering and business consultancy to defence, nuclear, aerospace, space and utilities organisations. Services include systems thinking, architecture and design support, risk and…
Serves large organisations and public-sector buyers in the UK defence, nuclear, space/aerospace, transport and utilities sectors, including teams managing complex, regulated engineering programmes.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
Bass Rock Engineering Management Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering management and project management consultancy for defence, aerospace and government programmes. Services include systems engineering, air safety support, requirements management,…
Serves public sector departments and businesses in defence, aerospace, nuclear and major infrastructure, from start-ups to FTSE 100 companies, including organisations involved in nationally…
Financial Health
HealthyHealthy · Growing, Hiring · 10% CAGR over 2y
Location
RHEA Group
Provides engineering and technical services for space and security sectors, including space systems engineering, ground segment and mission operations support, cybersecurity services, security…
Serves institutional and commercial clients in the space sector, alongside government and enterprise technical, security and programme teams responsible for demanding, mission-critical engineering…
Financial Health
Insufficient historyInsufficient history
Location
SYNOPTIX LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides systems engineering consultancy and technology services, including model‑based systems engineering, AI and digital solutions, and cybersecurity. Works with clients in sectors such as…
Serves B2B and public-sector organisations in complex, regulated sectors including aerospace, defence, communications, energy, healthcare, maritime, space and transportation.
Financial Health
StrongStrong · Hiring · 28% CAGR over 3y
Location
INFINITY SYSTEMS ENGINEERING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides systems engineering consultancy including safety, reliability and environmental engineering support for complex projects. Works with sectors such as aerospace, space and land systems,…
Serves organisations delivering civilian and military engineering projects, particularly in space, land systems and aerospace sectors, including clients needing systems, safety, reliability or…
Financial Health
StableStable · Hiring · 35% CAGR over 4y
Location
Logistical Support Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides specialist transport and logistics for military and defence consignments, including international air and sea freight forwarding, charter management, and dedicated fleet transport services…
Serves military and defence organisations, government/public-sector buyers and defence contractors needing UK, European and international logistics support for specialist consignments.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
ANTILLION LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns and builds edge computing technology, including rugged edge servers (PACE) and orchestration software (LOEN) used to deploy, manage, and secure distributed IT systems and critical workloads…
Serves B2B customers running critical workloads in demanding or disconnected environments, including operational and technical teams needing secure, compliant, scalable systems at the edge.
Financial Health
StableStable · -78% CAGR over 3y
Location
Melford Resolution Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy on night vision and advanced imaging for defence and security companies, including market analysis, product development support and strategic planning, and represents Photonis…
Serves B2B defence and security-sector companies, especially night vision and advanced imaging manufacturers targeting UK customers, partners and government agencies.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Rose Partners Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy and programme delivery services focused on capability and capacity building for governments and organisations, including modernisation and reform projects, supplier procurement,…
Serves government and public-sector bodies, national infrastructure organisations, commercial organisations and high-net-worth individuals, including clients in security, resilience, reform and…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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How Bristol defence companies work and how to sell to them
What they do
Bristol defence firms usually earn revenue through contracted engineering delivery, systems integration, technical assurance, testing, specialist manufacturing support and ongoing support obligations. Pricing tends to follow statements of work, milestone payments, time-and-materials day rates, fixed-price work packages or retained support agreements. Software-led firms are more likely to sell licences or hosted access attached to implementation and support, rather than pure self-serve subscriptions. Engagements often begin with a defined feasibility or assurance task, then expand when the supplier becomes part of a programme’s delivery chain and can evidence security handling, documentation and change-control discipline.
Who they sell to
Typical customers are defence primes, aerospace supply-chain teams, public bodies, security-sensitive infrastructure operators and specialist consultancies that need extra engineering capacity. The economic buyer is often a programme director, commercial lead or business-unit head, while technical approval may sit with engineering, systems, cyber or safety-assurance teams. Procurement is usually direct and relationship-led once a supplier is known, but initial access may come through framework competitions, subcontractor qualification, partner introductions or RFPs. Sales cycles tend to be slow because buyers test delivery history, clearance needs, insurance, quality processes and the ability to work within existing programme governance.
What they buy
Most firms in this segment tend to spend on tools and services that reduce delivery risk rather than broad office automation. Common needs include project accounting, resource planning, bid and contract management, document control, quality management, audit evidence, secure collaboration, cyber monitoring, endpoint management and controlled cloud hosting. Specialist teams may also buy design and simulation tools, test equipment, lab services, export-control advice, insurance, legal support and technical recruitment. Sellers with finance, HR or operations products usually need to connect the pitch to utilisation, margin leakage, accreditation readiness or the cost of missed programme milestones.
Why and how to sell to them
Buying intent often appears around contract wins, framework qualification, new subcontracting relationships, security reviews, senior operations hires, or a move from ad hoc project delivery into repeat support work. Defence buyers tend to resist generic productivity claims; they respond better to evidence that a vendor can shorten bid cycles, protect controlled information, make audit trails easier, improve resource allocation or reduce delivery slippage. Outbound messaging should be specific to the programme environment: mention security-sensitive procurement, documentation burden, scarce technical labour and the need to stay billable while satisfying customer assurance demands.
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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