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Physical Security Companies in Cambridge: 30 Active Firms (2026)
Physical security companies provide guarding, key holding and site protection services to organisations in and around Cambridge.
Buying usually sits with facilities, estates, procurement and risk teams, rather than a dedicated security-specialist function. Customers are mainly commercial, institutional and public-sector premises that need contracted labour, key-holding cover or managed site routines. Engagements tend to be service contracts built around shifts, lock-up, alarm response and incident reporting, so pricing is tied to labour hours, response windows and premises covered. The relevant providers range from owner-managed local operators to multi-site contractors able to place vetted staff across several customer locations.
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Cambridge has 30 actively trading physical security companies, making this a small local cohort rather than a broad regional cluster. Reported employment totals 160 people, which fits the buyer-facing character of the market: labour deployment, supervision and rota cover matter more than proprietary technology. The turnover profile also looks weighted towards smaller operators, with higher-revenue providers relatively scarce. For researchers, coverage is likely to pick up local guarding and key-holding suppliers, plus a limited number of contractors able to handle larger or multi-site briefs around Cambridge.
Private security work in Cambridge sits within the same Security Industry Authority (SIA) framework as the wider UK market. SIA licensing applies where work is supplied under a contract for services and involves a licensable activity; manned guarding and key holding are the most relevant categories for Cambridge providers. Front-line operatives need the appropriate licence, while directors, managers or supervisors may need front-line or non-front-line authorisation when their business supplies security labour under contract. Licence status, subcontracting arrangements and supervision therefore sit close to commercial risk, especially where buyers outsource guarding but retain reputational exposure for incidents on site.
Commercial demand appears likely to remain tied to premises use, insurance expectations and public-sector procurement cycles, rather than technology adoption alone. Local operators tend to compete on staff reliability, response coverage and account management; larger contractors can add breadth, but still face the same licence and labour-cost constraints. Consolidation may be selective, particularly where customers want fewer suppliers across multiple sites. Even so, the cohort’s early-commercial weight suggests plenty of owner-managed businesses will remain visible, with scale-up outcomes depending more on contract retention and supervisor capacity than on software-led expansion.
30
Active firms
2026
1
Above £5M
turnover threshold
4
Since 2022
new incorporations
Key facts
About 3% of the trading cohort reports turnover above £5M (1 of 30 firms) — the rest sits below that revenue band.
13% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
Security Industry Authority licensing applies where contracted security work involves a licensable activity, including manned guarding and key holding.
Front-line SIA licences cover individuals doing licensable work, while directors, partners, managers and supervisors may need front-line or non-front-line licences when supplying operatives under contract.
UK security exports reached £12.9 billion in 2024, up 16.6% on 2023 in nominal terms; physical security accounted for 33% of the total, worth £4.3 billion.
Europe was the largest regional export market for UK security exports in 2024 at £6.5 billion, or 51% of the total; North America was second at £2.8 billion.
Top Cambridge physical security companies
ABSOLUTE PROTECTION AND INVESTIGATION LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · -80% CAGR over 3y
Location
Smart Astra Solutions Services Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
ANGLIA SECURITY SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, keyholding and alarm response, CCTV monitoring, access control systems, and alarm installation. Also supplies reception and event…
Serves regional businesses and organisations across varied sectors that need outsourced security for people, premises, property and events, including clients requiring staffed sites, patrol response,…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
Dardan Security
Provides security services for commercial properties and organisations, including manned guarding, mobile patrols, keyholding and alarm response, front-of-house security staff, and security…
Serves businesses and organisations needing protection for buildings, staff, property and reputations, including site owners, facilities teams and workplace managers requiring guarding, patrol,…
Location
Dardan Security
Provides security services including manned guarding, mobile patrols, keyholding and alarm response, door supervision, and front‑of‑house security staff. Also offers security consultancy and…
Serves businesses and organisations with workplaces, buildings, staff and reputational risk, including clients needing outsourced security, front-of-house support, mobile patrols, keyholding and…
Location
LOYAL RELIANCE SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities services including manned guarding, event and site security, vacant property protection, mobile CCTV and surveillance, and commercial cleaning such as office,…
Serves corporate, commercial and private clients in the UK, including shopping centres, energy, education, infrastructure, corporate offices, logistics, warehouses, construction sites, vacant…
Financial Health
StrongStrong · Growing, Hiring · 166% CAGR over 4y
Location
JK 724 SECURITY SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides security services including manned guarding, security guards, bodyguards, CCTV monitoring, front‑of‑house security, traffic and fire marshals, and protection for offices, retail sites,…
Serves UK businesses and property owners, including offices, retailers, hotels, construction sites and organisations with lone workers or public-facing premises; also addresses private clients…
Financial Health
WeakWeak · Hiring · 12% CAGR over 2y
Location
Trenchgate Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Trajectory
4y · 2023–NowFinancial Health
Insufficient historyInsufficient history
Location
Cambridge Security Services Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides event and venue operational services including car park design and management, traffic management on public highways, hostile vehicle mitigation barrier installation, safety stewarding and…
Serves B2B event and venue operators, including stadiums, arenas, heritage locations, major outdoor events and static sites, as well as organisers managing visitor, crew and public access operations.
Financial Health
WeakWeak · -16% CAGR over 4y
Location
MIB Security Services UK Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
FINGERS INC LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
IMPECCABLE SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
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How Cambridge physical security companies work and how to sell to them
What they do
Cambridge physical security providers earn mainly from recurring service contracts, with revenue tied to people, time and response commitments rather than a single product sale. Work can include static guarding, mobile patrols, key holding, lock-up routines, alarm attendance, reception-style cover and incident reporting. Pricing typically follows guard-hour rates, call-out fees, retainers or blended contract charges by site, shift pattern and required response window. Margins are shaped by wage costs, vetting, training, travel time, supervision and unsocial-hours cover, so contract design matters. A few providers may add installation or maintenance around access control and monitoring equipment, but labour deployment remains the commercial centre of the segment.
Who they sell to
Buyers are usually premises-heavy organisations: offices, laboratories, education sites, healthcare estates, construction locations, warehouses, local authorities and managed property portfolios. The day-to-day sponsor is often a facilities manager, estates director, operations lead or risk manager, with procurement and finance involved once cover becomes contracted or multi-site. Smaller engagements can be won through direct relationships and local referrals; larger or public-sector assignments tend to move through tenders, approved supplier lists or framework-style procurement. Sales cycles vary with urgency: emergency cover can move quickly, while planned guarding contracts usually involve site surveys, licence checks, insurance review, pricing negotiation and mobilisation planning.
What they buy
Most physical security firms tend to spend on systems and services that keep labour deployable, traceable and paid accurately. Useful categories include workforce scheduling, time and attendance, lone-worker monitoring, route planning, incident reporting, proof-of-attendance tools, payroll, HR, training records and licence tracking. Sales and back-office needs are often practical rather than speculative: CRM, tender management, invoicing, credit control, accounting, document storage and insurance support. Operators with mobile patrols may also buy fleet management, fuel cards, vehicle maintenance, uniforms, protective equipment and communications hardware. Recruitment, background screening, employment law advice and health and safety support can be relevant where staff turnover or subcontracting creates operational strain.
Why and how to sell to them
Buying intent tends to surface when a provider wins a new site, loses supervisors to admin, takes on longer shift patterns, enters a tender process or needs better evidence that contracted duties were completed. SIA licence management, staff churn, wage inflation, insurance requirements and incident documentation are recurring pressure points. Sellers usually need a practical angle: fewer missed shifts, cleaner audit trails, faster mobilisation, lower payroll leakage or clearer reporting for end customers. Messaging that recognises thin margins and operational urgency is more credible than broad efficiency claims. Triggers worth watching include new public-sector awards, recruitment pushes, fresh management appointments, expansion into neighbouring areas and changes in subcontracting arrangements.
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 Cambridge
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Frequently asked questions
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