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Security Companies in the UK: 12,000+ Active Firms (2026)
Physical security companies in the UK provide guarding, key holding, monitoring and site protection services under SIA rules.
security companies in this list are UK-registered firms matching: The ideal company provides contracted physical security services in the UK, including manned guarding, key holding, mobile patrols, access control operations and site protection. It operates within SIA licensing requirements and supplies trained front-line staff to commercial, public-sector, infrastructure, logistics, retail and facilities clients. It is a labour-intensive service provider with hundreds to thousands of employees and annual turnover from the mid-millions to more than £100m. It manages multi-site contracts, shift-based operations, compliance documentation, workforce scheduling and customer service across regional or national coverage..
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This list covers 12,313 actively-trading security companies, of which 290 report turnover above £5M.
Most active firms file accounts via Companies House and report turnover and headcount through XBRL. Smaller filers (micro-entity / abridged) report less detail; figures for those are estimated from peer benchmarks.
3,259 firms in this cohort were incorporated since 2022, a signal of recent activity in the sector.
12,313
Active firms
2026
290
Above £5M
reported turnover
3,259
Incorporated since 2022
newer registrations
Key facts
About 2% of the trading cohort reports turnover above £5M (290 of 12,313 firms) — the rest sits below that revenue band.
26% of the cohort was incorporated since 2022 (3,259 firms), so a sizeable share is in its first few filing cycles.
The SIA regulates the UK private security industry, including contracted licensable work in guarding and related services.
SIA licensing applies where work is supplied under a contract for services and involves a licensable activity.
Licensable activities include manned guarding, key holding and vehicle immobilisation in Northern Ireland.
UK security exports were £12.9 billion in 2024, up 16.6% on 2023 in nominal terms.
Physical security accounted for 33% of UK security exports in 2024, worth £4.3 billion.
Top UK security companies
Lodge Security Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services for businesses, particularly retail, including manned guarding, mobile patrols, keyholding and alarm response. Installs and monitors security systems such as CCTV, alarms,…
Serves businesses with multi-site security needs, especially retail operators, corporate sites and distribution/logistics organisations, across the UK, Ireland and South Africa.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 17% CAGR over 4y
Location
Lodge Service International Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, keyholding and alarm response. Installs and monitors business security systems such as CCTV, alarms, access control and fire…
Serves B2B organisations across the UK, Ireland and South Africa, including retailers, corporate sites and healthcare distribution businesses, with buyers such as operations, facilities, security and…
Financial Health
StrongStrong · Profitable, Hiring · 18% CAGR over 4y
Location
LAND SHERIFFS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides manned security and surveillance services including mobile patrols, manned guarding, trespass and welfare monitoring, keyholding and alarm response, and 24/7 control room monitoring. Serves…
Sells to businesses and organisations needing manned security and surveillance, especially rail and transport operators, plus infrastructure, construction, motor and utilities firms across the UK.…
Financial Health
StableStable · Profitable · -10% CAGR over 2y
Location
Prime Trading Group (UK) Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides SIA‑approved security services including manned guarding, CCTV tower systems, mobile patrols, keyholding and alarm response for construction sites, corporate premises and vacant properties,…
Serves UK businesses managing construction sites, vacant properties, corporate premises, residential buildings and events, including property owners, facilities managers and site operators.
Financial Health
StrongStrong · Growing · 0% CAGR over 1y
Location
SENTINEL GROUP SECURITY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides SIA-licensed security services including manned guarding, mobile patrols, event security, front-of-house staff and fire marshals. Also delivers threat monitoring, travel risk management,…
Serves UK organisations in facilities management, banking and finance, healthcare, education, retail and fashion, distribution and logistics, plus local and central government buyers.
Financial Health
StableStable · -4% CAGR over 4y
Location
SMART SEC SOLUTIONS LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides contract security services for corporate, retail, and public sector sites, including security guarding, front‑of‑house officers, reception and concierge staffing, mobile response, key…
Serves corporate occupiers, blue-chip firms in banking and asset management, property and facilities managers, retail property and shopping centre operators, and public sector organisations across…
Financial Health
WeakWeak · -9% CAGR over 2y
Location
EBORACUM UK LTD.
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding, key holding and alarm response, mobile patrols, community safety teams, event and door supervision, cleaning services,…
Serves organisations needing security, safety and facilities support, including visitor attractions, schools, shopping parks, BIDs, councils, police forces, licensed premises, lettings firms and…
Financial Health
StrongStrong · 21% CAGR over 5y
Location
HDS SECURITIES CONTRACTS LTD.
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response. Also delivers port and passenger terminal security, warehouse security, and related security…
Serves B2B customers in ports, passenger terminals, logistics and warehousing, including port operators, cruise line operators and businesses with commercial premises requiring contracted security…
Financial Health
StrongStrong
Location
Triton Security & Facilities Management Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned security guards, mobile patrols, key holding and alarm response, CCTV installation and monitoring, access control, concierge…
Serves UK businesses and property operators, including retail and shopping centres, construction sites, warehouses, solar farms, vacant properties, offices and commercial estates.
Financial Health
HealthyHealthy · Growing · 2% CAGR over 4y
Location
Graffins Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides contract security services including manned guarding, concierge and reception staffing, CCTV‑licensed officers, access and egress control, event and crowd management, and car park security.…
Serves businesses, public sector bodies and facilities contractors across corporate, warehouse/distribution, manufacturing, retail, construction, education, healthcare, housing, sport and events…
Financial Health
StableStable · Hiring · 18% CAGR over 4y
Location
LINGWOOD SECURITY MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including security guards, mobile patrols, keyholding and alarm response, and CCTV monitoring. Supplies trained personnel for rail, utilities, construction, events…
Serves UK businesses and public-sector organisations in rail, utilities, energy, construction, facilities management, events and festivals, NHS, schools and campuses needing site security support.
Financial Health
StableStable · -1% CAGR over 4y
Location
Magenta Security Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services for businesses, events and public sites, including SIA‑licensed security guards, mobile patrols, CCTV monitoring, K9 units, event security, key holding and alarm response.…
Serves UK businesses, event organisers and public-sector bodies, with target sectors including construction, corporate, healthcare, hospitality, industrial, logistics, manufacturing, retail and…
Financial Health
StableStable · -4% CAGR over 5y
Location
Frontline Security 247 Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides manned security and facilities management services, including security guards, door supervision, CCTV monitoring, mobile patrols, keyholding and alarm response, close protection, event…
Serves UK businesses, property and facilities managers, event organisers, rail operators, hospitality venues and high-net-worth individuals with security and risk-management needs.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 5y
Location
M4 SECURITY GROUP LIMITED
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, loss prevention officers, concierge and reception staffing, patrol and vacant property security. Supplies security personnel for sectors such as…
Serves businesses and public-sector organisations nationwide across corporate, industrial, education, finance and insurance, government, rail, retail, leisure, transport and logistics, plus property…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
VERITECH SYSTEMS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including SIA‑licensed guards, mobile patrols, dog handlers and concierge security. Installs and monitors CCTV, access control and perimeter systems, and supplies…
Serves B2B and public sector clients, including construction sites, corporate and commercial properties, property managers, local authorities, healthcare and education providers, student…
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
NAVIGATION SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response. Installs and monitors CCTV systems and drone surveillance, and supplies security personnel and…
Serves UK businesses and site operators in construction, rail, infrastructure, civils, utilities, critical sites, retail, logistics and commercial property needing outsourced security coverage.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
SURREY SECURITY SERVICE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including SIA-licensed manned guarding, construction site security, dog handlers, mobile patrols, and keyholding with alarm response. Also supplies CCTV tower systems,…
Serves businesses and public-sector organisations needing security and facilities support, including construction sites, void properties, and other site-based operations, across England and Wales.…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 4y
Location
Project Security UK Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, alarm response, key holding, CCTV and alarm monitoring, and event security. Also offers close protection, site and scaffold…
Serves UK businesses, public sector bodies and homeowners, including commercial and industrial premises, offices, schools, hospitals, retail sites, event organisers, construction/scaffolding sites…
Financial Health
HealthyHealthy · -13% CAGR over 4y
Location
Safe Security (N.I.) Limited
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides security services including manned guarding, CCTV and alarm monitoring, mobile patrols, key holding, close protection, and event security. Also offers security consulting, vehicle tracking,…
Serves businesses, property owners and event organisers across the UK and Ireland, including organisations needing protection for staff, premises, events and assets.
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
FLEETVILLE SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding for retail, corporate, residential and construction sites, event security, CCTV monitoring, mobile patrols, key holding, control room operations,…
Serves retailers, corporate and concierge sites, commercial and residential property clients, event organisers, construction sites, and organisations needing security support across the UK.
Financial Health
StrongStrong · Growing, Hiring · 69% CAGR over 4y
Location
MARPOL SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial security services including manned guarding, mobile patrols, CCTV installation and remote monitoring, alarm response, keyholding, vacant property inspections, and guard dog units.…
Sells to businesses and organisations needing security for premises and sites, especially in construction, corporate offices, retail, hospitality, car parks, vacant properties, insolvency cases and…
Financial Health
StrongStrong · Growing, Hiring · 244% CAGR over 4y
Location
SFM (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services, including manned guarding, close protection, retail and corporate security, guard dog patrols, mobile patrols, alarm response, event security,…
Serves UK businesses, public-sector organisations and some domestic clients needing security or facilities support, including retailers, corporate offices, logistics depots, hospitals, schools,…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
K4 SECURITY SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervision, CCTV monitoring, mobile patrols, key holding and alarm response. Also delivers event security planning and stewarding, CCTV and…
Serves public and private sector clients across the UK, including commercial, residential, retail, corporate and industrial organisations, plus event organisers.
Financial Health
WeakWeak · -5% CAGR over 4y
Location
Foremost Security Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial security services including manned guarding, mobile patrols, keyholding and alarm response, lock and unlock services, vacant property inspections, gatehouse and concierge…
Serves businesses and organisations across the East Midlands, including professional services, manufacturing, education, healthcare, local authorities, retail, sports venues, construction, solar…
Financial Health
HealthyHealthy · -20% CAGR over 2y
Location
HACKLE SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security guarding, front-of-house reception and security staff, keyholding, alarm response, and mobile patrol services, supported by a 24-hour control room for commercial and…
Sells to businesses and property operators needing outsourced security and front-of-house staff, including commercial and domestic property owners, offices, industrial sites and retail parks, with…
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
Mane K9 Security Services Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, security dog teams and search and detection dogs. Also offers event security, mobile patrols, key holding and alarm response, CCTV tower…
Serves UK organisations needing outsourced security, including event organisers, property owners or managers, construction and vacant-site operators, and businesses requiring guarding, patrol or…
Financial Health
StrongStrong · Growing, Hiring · 35% CAGR over 4y
Location
COBRA SPECIALIST SECURITY SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, CCTV monitoring and installation, keyholding and alarm response, mobile patrols, retail security, dog handlers, and event security, alongside…
Serves businesses and public-sector organisations across the UK and Ireland, including commercial and industrial sites, retailers, event organisers, local councils, food preparation businesses, and…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
VIGILANT SECURITY SERVICES UK LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including security guarding, door supervision, key holding and public‑space CCTV monitoring. Also delivers front‑of‑house reception (“proception”) services and risk…
Serves UK businesses and public sector organisations, ranging from small enterprises to global brands, across varied industries needing outsourced security and front-of-house providers.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Impact Services Northern Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding, key holding and front‑of‑house services, along with commercial cleaning and building maintenance support. Works with businesses across sectors to supply security personnel…
Serves businesses and organisations across the UK, including corporate offices, retail premises, prestigious sites and blue-chip clients in a wide range of sectors seeking outsourced facilities…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
KK SECURITY & FM LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides SIA-licensed security services including manned guarding, mobile patrols and CCTV monitoring for construction sites, vacant properties, corporate premises, retail locations and events. Also…
Serves construction firms, property developers and managers, corporate offices, retailers, event organisers, solar farm operators and public-sector or education estates needing security and…
Financial Health
HealthyHealthy · Profitable · -9% CAGR over 4y
Location
GUARDING UK LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols and response, remote CCTV monitoring, and technical security systems. Also supplies out-of-hours reception, fire safety support…
Serves UK businesses that need outsourced site protection, reception and facilities support, including organisations managing offices, commercial premises and multi-site estates.
Financial Health
HealthyHealthy · -1% CAGR over 4y
Location
TAYBAR SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides contract security services for commercial and public sector sites, including manned guarding, mobile patrols, key holding and alarm response, lock and unlock services, event and door…
Serves UK businesses, venues and public sector organisations, including construction sites, corporate offices, schools, factories, holiday parks, hospitality operators, industrial sites and retail…
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
Location
LONDON SECURITY SERVICES (UK) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding services for businesses and organisations, including door supervisors, retail security, event security, construction site and residential guards, concierge and CCTV…
Serves businesses of all sizes, public-sector organisations, retailers, hospitality venues, event organisers, construction and industrial sites, schools, airports, residential property owners and VIP…
Financial Health
HealthyHealthy · -12% CAGR over 5y
Location
SNSG Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, concierge security, CCTV monitoring, mobile patrols, street marshalling, and event and door supervision. Supplies SIA‑licensed security personnel…
Serves businesses and public-sector organisations across the UK, including event venues and festivals, hospitality and leisure operators, NHS and private healthcare sites, property managers,…
Financial Health
StrongStrong · Growing, Hiring · 51% CAGR over 4y
Location
360 ALERT SECURITY LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides contract security services including manned guarding, retail and event security, mobile emergency response, key holding, CCTV monitoring and installation, gatehouse and concierge security,…
Serves businesses and organisations across the UK, including retailers, event organisers, business parks, industrial sites, private residential developments, premises managers, bailiffs and local…
Financial Health
StrongStrong · Growing, Hiring · 74% CAGR over 4y
Location
SYSTEMATIC SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding for corporate, retail and construction sites, event security, reception and concierge staffing, key holding and mobile patrols, waking watch fire…
Serves UK businesses and organisations needing contracted or ad hoc security cover, including corporate offices, construction sites, event organisers, retailers, residential/property managers and…
Financial Health
StableStable · -6% CAGR over 4y
Location
New Concept Security Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides private security services including manned guarding, mobile patrols, key holding and alarm response, door supervision, event security, retail and construction site security, and installation…
Serves public and private sector organisations across the UK, including construction sites, car parks, commercial buildings, retailers, event organisers, entertainment venues and private functions.
Financial Health
HealthyHealthy · Hiring · 91% CAGR over 4y
Location
ESG SECURITY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervisors, mobile patrols, dog handling, keyholding and alarm response, CCTV monitoring, and deployment of mobile CCTV towers and…
Serves businesses and organisations across the UK, including commercial premises, construction sites, venues, landlords and facilities or property managers requiring outsourced security support.
Financial Health
StableStable · -14% CAGR over 4y
Location
TRAGOPAN SECURITY SOLUTIONS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, K9 dog handling, key holding and alarm response. Also installs and monitors CCTV systems and offers lock and unlock services for…
Serves businesses, organisations, facilities managers, event operators and homeowners in London and across the UK seeking outsourced security support for premises, personnel and assets.
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
Universal Commercial Guarding Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides private security services for commercial clients, including manned security officers, mobile and static patrols, event security, keyholding, fire watch, and 24/7 remote monitoring. Also…
Serves B2B and organisational buyers needing tailored security services, especially corporate clients, property and facilities teams, commercial building managers, event organisers, and organisations…
Financial Health
StableStable · -8% CAGR over 4y
Location
Panad Site Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and site support services including manned guarding, mobile patrols, CCTV monitoring, alarm response and keyholding. Also offers fire safety inspections and training, cleaning,…
Serves business clients and site operators with physical premises, including those needing security personnel, patrols, CCTV monitoring, reception cover, fire safety, cleaning, grounds maintenance,…
Financial Health
HealthyHealthy · -1% CAGR over 4y
Location
Black Diamond Security Ltd
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsProvides security services including manned guarding, close protection, and canine dog handling. Installs and monitors CCTV, alarms, access control systems, and rapid‑deployment cameras, and conducts…
Serves businesses, public sector bodies and private/residential clients across London and the UK, including rail, construction, utilities, education, logistics, manufacturing, retail, environment and…
Financial Health
HealthyHealthy · Growing, Hiring · 13% CAGR over 2y
Location
Rossi Facility Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding, mobile patrols, keyholding, alarm response and electronic security. Also delivers close protection, retail and event…
Sells to businesses and organisations needing outsourced security, especially luxury retail brands, jewellery boutiques, hospitality venues, corporate offices, educational institutions and VIP event…
Financial Health
StrongStrong · Growing, Hiring · 39% CAGR over 4y
Location
EFFECTIVE SECURITY SERVICES LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides security services including manned guarding, door supervision, close protection and event security for hospitality venues, retail sites, transport locations and public events. Supplies…
Serves UK businesses and public-sector buyers, including hospitality venues, pubs, breweries, bars, nightclubs, hotels, restaurants, QSR franchisees, retailers, local government, business improvement…
Financial Health
HealthyHealthy · Profitable · 5% CAGR over 1y
Location
FIRST RESPONSE SECURITY GUARDS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding, corporate, construction, retail and event security, concierge and key holding, dog patrols, cleaning services, pest…
Serves B2B clients across the UK, including local, regional and national businesses of all sizes in corporate, construction, retail, hotel, events and residential property sectors.
Financial Health
StrongStrong · Hiring · 122% CAGR over 4y
Location
Tyne Tees Security Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including security guarding, key holding, cleaning, grounds maintenance, waste management, property services and security training, supplying…
Serves businesses and organisations across the UK that manage premises, property or land, including facilities, estates and operations teams seeking outsourced site support.
Financial Health
StrongStrong · Growing, Hiring · 2% CAGR over 4y
Location
G3 SECURITY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including corporate, retail, hotel and construction site security, event security, concierge services, mobile patrols and key holding. Also supplies K9 security,…
Serves B2B customers needing onsite security, including corporate offices, construction sites, event organisers, hotels, retailers, industrial and warehouse operators, primarily in London and other…
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
FSI EUROPE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities support services for businesses, including manned guarding, mobile and canine patrols, CCTV and electronic security, executive protection, key holding and alarm…
Serves UK businesses and organisations with security-sensitive premises, including corporate offices, infrastructure operators, manufacturers and clients managing high-risk sites or executive…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
Universal Security Guards (GB) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides security services including manned guarding, CCTV monitoring, alarm response, mobile patrols, key holding, and door supervision. Supplies licensed security officers to monitor premises,…
Serves UK businesses and organisations with premises or sites to protect, including property/site operators, venues requiring door supervision, and clients with monitored locations or patrol needs.
Financial Health
StrongStrong · Hiring · 31% CAGR over 2y
Location
Security Nation Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding and door supervision services for events, festivals, stadiums, pubs, hotels and licensed venues, as well as construction sites, retail and industrial premises. Offers…
Serves businesses and event organisers across the UK, including pubs, clubs, hotels, licensed premises, festivals, concerts, construction sites, sporting venues, industrial sites, retail units and…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 5y
Location
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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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