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Manned Guarding Companies in London: 2,200+ Active Firms (2026)
Manned guarding companies provide staffed security, patrol and access-control services for premises and events across London.
Buying centres tend to sit with facilities managers, property managers, venue operators, construction-site teams and public-sector estates functions rather than with a single security buyer. Contracts are typically labour-led and service-level driven, with buyers looking for licensed guards, mobile patrol cover, reception staffing, keyholding, alarm response and incident reporting under one operating model. Engagements range from single-site guarding to multi-site London borough coverage, with scheduling, vetting, training records and contract management often as important as the guard-hours themselves. The more attractive suppliers for this page are operators with material UK turnover rather than small ad hoc event-staffing firms.
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London has 2,248 actively trading manned guarding companies, spanning local patrol firms, reception-security providers and labour-intensive operators serving commercial property, venues, construction sites, logistics hubs, retailers and local authorities. Reported employment totals 8,956 people, which gives the cohort a visible frontline workforce footprint even before subcontracted or variable-hours labour is considered. The market is therefore not just a licensing story; it is also a workforce-planning market, where service quality depends on rostering discipline, site supervision, vetting, training records and response procedures across dispersed premises.
Licensing, vetting and compliance training shape the operating model more than product differentiation. Frontline roles need credential checks, while buyers often expect incident logs, escalation routes and audit trails that can be reviewed by facilities, procurement or public-sector contract teams. Event and venue work adds crowd-management and access-control requirements; construction and logistics sites tend to focus on gatehouse duties, patrol visibility and out-of-hours response. Contract risk is practical rather than abstract: missed shifts, weak supervision or poor handover can affect insurance, tenant relations and public safety obligations.
The London market appears likely to remain fragmented at the smaller end, because local relationships and short-notice coverage still matter for property, construction and venue buyers. Larger labour-intensive operators tend to compete on contract governance, supervision and reporting, while smaller firms compete on responsiveness and familiarity with borough-level sites. Procurement teams are likely to keep pressing for clearer evidence of licensing, vetting and incident handling, which favours suppliers that can document service delivery without making the model feel over-engineered. Consolidation may continue where operators need denser guard pools and better back-office control, but many contracts will still be won site by site.
2,248
Active firms
2026
28
£5M+ firms
Above £5M turnover
783
New incorporations
Incorporated since 2022
Key facts
About 1% of the trading cohort reports turnover above £5M (28 of 2,248 firms) — the rest sits below that revenue band.
34% of the cohort was incorporated since 2022 (783 firms), so a sizeable share is in its first few filing cycles.
Services centre on staffed guarding, patrol and access-control work for premises and events across London.
Procurement tends to sit near facilities management, property operations and event delivery rather than within a standalone security buying team.
Different delivery models can sit inside the same manned-guarding category, from fixed-site teams to patrol and access-control work.
Top London manned guarding companies
PRESTIGE SECURE SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides private security services including manned guarding, door supervision, mobile patrols, CCTV monitoring, keyholding and alarm response, event security, concierge and front‑of‑house security,…
Serves businesses and private organisations needing security support, including corporate offices, construction firms, retailers, hospitality venues, education providers, event organisers and…
Financial Health
StrongStrong · Hiring · 65% 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
Secure FM Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding, alarm monitoring and response, mobile patrols, concierge and gatehouse services, vacant property inspections, canine…
Serves B2B and public sector buyers managing single sites or national portfolios, including councils, housing providers, retail operators, construction firms, logistics businesses, event venues, and…
Financial Health
StrongStrong · Growing, Hiring · 36% CAGR over 4y
Location
United Guarding Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response, reception and concierge staffing, event security, fire marshal provision, and 24-hour control…
Serves businesses and property occupiers in London with high-profile premises, including corporate offices, front-of-house environments, event venues and organisations needing security cover.
Financial Health
StableStable
Location
1SC Guarding Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, key holding, alarm response and concierge services. Also offers remote monitoring, lone worker monitoring and personnel screening…
Serves public-sector bodies and business clients, including NHS and healthcare organisations, London councils and local authorities, education providers, utilities, corporate facilities teams, and…
Financial Health
WeakWeak · -5% CAGR over 4y
Location
Swift Alert Services Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides security guard and security management services, including door supervision, event and retail security, construction site guarding, dog handling, CCTV monitoring, key holding and alarm…
Serves businesses, property owners and households needing security services, particularly construction sites, retail premises, event organisers and sites requiring concierge, CCTV, key holding, alarm…
Financial Health
StrongStrong · Hiring · 68% CAGR over 4y
Location
LONDON SECURITY GUARDS LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides manned security services including static guards, door supervisors, retail and corporate security, event security, mobile patrols, dog handling, close protection, CCTV monitoring, key…
Serves businesses, event organisers and residential clients across London, including retailers, construction sites, hotels, offices, industrial operators, bars and clubs, VIPs and property owners.
Financial Health
HealthyHealthy · -60% CAGR over 1y
Location
JM GLOBIS SOLUTION LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, concierge and front‑of‑house security, key holding and alarm response, mobile patrols, fire watch, dog handling, and staffing for public space…
Serves public-sector bodies and businesses in the UK and internationally, including national and local government, police, NHS, critical infrastructure, utilities, finance, construction,…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Enigma Security Solutions
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, key holding and alarm response, mobile patrols, concierge and front‑of‑house staffing, fire watch, dog handling, and operation of public space…
Serves UK and international public-sector bodies and businesses, including national and local government, police, NHS, utilities, finance, construction, manufacturing, warehousing, automotive, media,…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
FAHRENHEIT SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding and related services including manned guarding, retail and corporate security, residential security, close protection, event security, mobile patrols, key holding and alarm…
Serves B2B and private clients in retail, luxury retail, jewellery, galleries, auction houses, corporate offices, commercial property, residential estates, events, hotels and property management…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
Secure Frontline Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including door supervision, corporate and construction site security, retail and hospitality security, event stewarding, close protection, residential security, CCTV…
Sells to businesses, private clients and some public sector organisations needing security services, including offices, retail and hospitality venues, construction sites, event organisers, shopping…
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 5y
Location
STONE HOUSE SECURITY SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including static guards, mobile patrols, key holding and alarm response. Supplies event, retail and construction site security, front‑of‑house staff, door…
Serves businesses, property managers, construction sites, event organisers, hospitality and retail venues, education providers and residential blocks in London and surrounding counties needing…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
MAIG SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding for business premises, event security and stewarding, residential guards, mobile patrols and alarm response, concierge security, door supervision,…
Serves businesses, event organisers, property managers and private clients needing security staff, including retail stores, hospitals, transport hubs, nightclubs, hotels, apartment buildings, VIPs…
Financial Health
StrongStrong · Hiring · 126% CAGR over 4y
Location
PREMIER UK SECURITY LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides private security services including manned guarding, mobile patrols, dog handler units, CCTV surveillance, key holding and traffic marshals. Serves construction sites, healthcare facilities,…
Serves businesses and public/community organisations across London and the UK, including construction sites, healthcare facilities, residential estates, corporate environments, retail premises,…
Financial Health
StableStable · Hiring · 23% CAGR over 4y
Location
GUARDFORCE SECURITY SERVICES (GB) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides manned security guarding and concierge services for commercial, retail, corporate and residential sites. Offers keyholding and alarm response, mobile and neighbourhood patrols, retail…
Sells primarily to businesses needing manned guarding and patrols, including local businesses, commercial, corporate and retail clients, as well as residential property sites. Serves organisations…
Financial Health
StableStable
Location
MANFORCE SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervision, corporate and retail security, mobile patrols, key holding and alarm response, event security, access control, and 24/7 remote…
Serves London businesses and organisations across corporate, retail, events, private property and public-sector settings, including venues, retailers, offices and facilities managers seeking…
Financial Health
WeakWeak · Hiring · 39% CAGR over 4y
Location
ACCOLADE (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervisors, concierge security, event and construction site security, retail and residential security, CCTV monitoring, and key holding.…
Serves private individuals and businesses from SMEs to global corporations, mainly in London and nationwide, including corporate offices, construction sites, hotels, retailers, event venues,…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
Metropolitan Security Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services for businesses, events and residential properties, including SIA-licensed security guards, mobile patrols, keyholding and alarm response, event security and crowd…
Serves UK businesses, retailers, event organisers and residential property owners, with an emphasis on London and nationwide clients needing security for premises, events, shops, malls and vacant…
Financial Health
StrongStrong
Location
PACIFIC BUSINESS SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides private security services including manned guarding, event security and door supervision, concierge and reception security, mobile patrols, construction site protection, key holding, and…
Serves businesses, venues and private clients needing security, including retailers, event organisers, bars and clubs, hotels, offices, financial institutions, construction sites, and residential or…
Financial Health
StrongStrong · Hiring · 86% CAGR over 4y
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
JAGUAR SECURITY LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including retail security, door supervision, event security, mobile patrols, construction site security, concierge and reception services, and static guarding for…
Sells to public- and private-sector organisations needing manned security, including retailers, shopping centres, schools, construction firms, hospitals and office buildings, plus venues requiring…
Financial Health
StrongStrong · Growing, Hiring · 29% 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
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
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
FAST K9 SECURITY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides security services including manned guarding, security guards, K9 dog handler patrols, mobile security patrols, traffic marshals, and event security. Also supplies monitored CCTV systems,…
Serves London-based businesses and site operators, including corporate offices, construction projects, industrial estates, logistics yards, warehouses, vacant property owners, retailers, and…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
Location
APOLLO SECURITY DIVISION LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial and residential security services including security guards, mobile patrols, keyholding and alarm response, CCTV monitoring, vacant property inspections, gatehouse and site…
Sells to businesses, homeowners, landlords and public sector organisations, including schools, colleges, NHS and mental health trusts. Targets organisations needing site, property and alarm-response…
Financial Health
StableStable · -29% CAGR over 2y
Location
CENTURY 4 SECURITY LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides manned guarding and security personnel for corporate sites, front-of-house and reception roles. Also offers key holding, alarm response and mobile patrol services, including access control,…
Serves London-based businesses, organisations and residential clients, with emphasis on corporate offices and premises requiring staffed front-of-house, reception and site security coverage.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
AK9 SECURITY AND FM SOLUTIONS LTD
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding for commercial and retail premises, event security, CCTV monitoring, door supervision, keyholding and mobile alarm…
Serves businesses, property managers and event organisers, including commercial complexes, offices, retail stores, public event venues and premises requiring security or facilities management support.
Financial Health
StrongStrong · Growing, Hiring · 131% CAGR over 5y
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
Intellectual Security Group Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervision, event security, crowd management, mobile patrols, keyholding and alarm response, and CCTV monitoring, supplying trained and…
Sells B2B and to public sector organisations needing contracted security staff, including event organisers, corporate sites, construction projects, hospitals and other public bodies. Serves clients…
Financial Health
DistressedDistressed
Location
1ST CLASS PROTECTION LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides private security services including manned guarding, personal protection, CCTV monitoring, concierge and reception security, and mobile patrols. Supplies SIA‑licensed security personnel for…
Serves businesses, private residential clients, construction sites, schools, colleges, universities and healthcare facilities in London and Greater London needing security personnel and protection…
Financial Health
StableStable · Hiring · 7% CAGR over 2y
Location
CERBERUS SECURITY SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides manned security and monitoring services for businesses and events, including retail and corporate security guards, reception security, mobile patrols, key holding and alarm response, CCTV…
Serves UK businesses and organisations, including retailers, corporate offices, facilities and property managers, event organisers, and owners or managers of vacant sites.
Financial Health
StrongStrong · Growing, Hiring · 73% CAGR over 2y
Location
PATRIOTS SECURITY UK LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including security guards, event stewarding, estate and concierge security for residential, commercial and hospitality sites. Also supplies caretaking, cleaning,…
Serves commercial and residential clients across London, including residential estates, nightclubs, corporate buildings, healthcare facilities, schools, universities, care homes, landlords, property…
Financial Health
StrongStrong · Hiring · 24% CAGR over 4y
Location
PROTECTIONS SECURITY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides private security services including manned guarding, retail and corporate security, mobile patrols and alarm response, event security, and waking watch fire safety patrols, along with…
Serves businesses and organisations responsible for premises, assets and public safety, including retailers, corporate offices, facilities managers, event organisers and property managers.
Financial Health
WeakWeak · -6% CAGR over 4y
Location
HS INTERNATIONAL ENTERPRISE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response, and security for events, retail, construction sites, car parks and hospitality venues. Also…
Serves businesses and event operators in Greater London needing security, including hotels, corporate offices, retailers, hospitality venues, car parks and construction sites, plus individuals…
Financial Health
DistressedDistressed · 2% CAGR over 4y
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
SECURE ON SITE PRIVATE SECURITY SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides private security services including SIA‑licensed security guards, manned guarding, event stewarding, door supervision, close protection, dog handling, and concierge security. Also offers…
Serves businesses, property managers and organisations in London across events, retail, car parks, construction sites, corporate offices, hotels, residential developments, schools and nightclubs.
Financial Health
StrongStrong · Hiring · 88% CAGR over 2y
Location
AA SECURITY FORCE LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides private security services including manned guarding, mobile patrols, keyholding and alarm response, 24-hour control room monitoring, dog handling units, close protection, and locksmithing…
Serves businesses, property owners and organisations in London, ranging from single-site premises needing keyholding cover to larger clients with full-scale security contracts across commercial or…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 1y
Location
SGC Support Services UK Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides manned security services for businesses and events, including security guarding, crowd safety and stadium security, mobile patrols and key holding, close protection, CCTV and alarm systems,…
Serves UK businesses and public-sector organisations needing security support, including facilities management providers, NHS trusts, government bodies, stadium and event operators, commercial…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
LEON GUARDING & FM LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including manned guarding, mobile patrols, retail and construction site security, event security, K9 dog units, key holding, CCTV and alarm…
Serves UK businesses, landlords and facilities/property managers needing outsourced security and facilities support, including retailers, construction sites, event organisers, vacant-property owners…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
LONTECH FACILITIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides contract security and facilities staffing services including manned guarding, mobile patrols, reception security and traffic marshals. Supplies CCTV and access control systems, key holding,…
Serves B2B clients across the UK, particularly construction sites, offices and vacant property managers, selling to businesses needing contract security, manned guarding, mobile patrols, reception…
Financial Health
HealthyHealthy · -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
VSECURE SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security guarding services using SIA‑licensed officers for construction sites, retail premises, corporate offices, waste management sites and events. Also offers key holding and alarm…
Serves B2B clients across the UK, with London coverage, including construction firms, landfill and waste management sites, retailers, corporate offices, event organisers, and property owners.
Financial Health
StableStable · Hiring · 63% CAGR over 4y
Location
ATLANTIS SECURITY SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides security services including concierge security, event security, CCTV and video surveillance, and guarding for construction sites, hotels, retail premises, industrial facilities and…
Serves B2B clients in London, including property managers, event organisers, construction sites, hotels, retailers, and industrial or warehouse operators needing security support.
Financial Health
StrongStrong
Location
Toptech Security Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security guard services including uniformed manned guarding, mobile patrols, retail and warehouse security, key holding and alarm response, event security, construction gate duties, and…
Serves businesses, public-sector organisations and private clients needing security support, including retail sites, warehouses, construction sites, events, commercial properties and premises…
Financial Health
StableStable · 0% CAGR over 4y
Location
KINGFISHER GUARDING SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervision, front-of-house concierge security, event security, mobile patrols and keyholding. Also delivers security training and…
Serves businesses, private organisations and event organisers in London, including construction sites, corporate offices, education providers, retailers, hospitality venues, commercial premises and…
Financial Health
WeakWeak · -3% CAGR over 4y
Location
Josoemag Services Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding and support services for businesses and public sector clients, including manned guarding, corporate and retail security, construction site security, key holding, reception…
Serves private individuals, corporate organisations and public-sector bodies in the UK, including retail, construction, property management, events, reception and front-of-house environments.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 5y
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
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
FOUR FRONT SECURITY SERVICES LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides private security services including corporate security officers, mobile patrols, close protection, event security, residential patrols, CCTV monitoring and virtual officer services, film…
Serves businesses and private clients, including corporate sites, event organisers, film studios and location productions, residential communities and individuals requiring close protection across…
Financial Health
StableStable · Hiring · 33% CAGR over 3y
Location
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How London manned guarding companies work and how to sell to them
What they do
Revenue is usually generated from guard-hours, supervisor time and contracted response cover, with margins tied to utilisation, wage rates, travel time and overtime control. Many London operators package static guarding, mobile patrols, reception cover, gatehouse duties, keyholding and alarm response into retained monthly contracts, then add variable charges for extra shifts, events, bank-holiday cover or temporary construction-site needs. Pricing tends to be hourly or day-rate led, sometimes with management fees for estates with several sites. The service is operational rather than product-led: buyers pay for licensed people, duty management, escalation procedures and evidence that incidents, absences and handovers are being handled consistently.
Who they sell to
Customers tend to be commercial landlords, managing agents, facilities outsourcers, venue operators, construction contractors, logistics site managers, retailers, residential block managers and local authorities. Day-to-day sponsors are often facilities managers, property managers, operations directors, site managers, heads of security, procurement leads and estates teams. Smaller contracts may be placed after site visits and rate-card comparisons; larger London estate or borough contracts usually involve formal tendering, evidence of licensing controls, insurance, staff-transfer planning, references and mobilisation plans. Sales cycles vary by urgency: an uncovered site can move in days, while larger procurement processes can take months.
What they buy
Most manned guarding firms tend to spend on workforce scheduling, time-and-attendance, payroll, HR, vetting, compliance training and incident-reporting systems before they buy more speculative technology. Mobile patrol operators also need vehicle management, route planning, lone-worker processes and communications tools for controllers and supervisors. Back-office spend often includes accounting, contract management, customer-relationship management, insurance advice, legal support, recruitment marketing and uniform or equipment procurement. Larger operators may also buy analytics for margin control, absence patterns and contract performance, but the pitch usually needs to connect directly to labour cost, service evidence or mobilisation speed.
Why and how to sell to them
Buying triggers often come from operational strain rather than abstract strategy: a new estate contract, a run of missed shifts, higher overtime, an audit failure, a public-sector tender, or growth in borough coverage can all expose weak back-office control. Leadership changes in operations, finance or procurement can also reopen supplier decisions, especially where margins are thin and contract reporting has become manual. Sellers tend to get further by linking the offer to guard utilisation, faster mobilisation, cleaner licensing evidence, lower payroll leakage, better incident trails or reduced supervisor admin. Claims about generic efficiency are less persuasive than a clear fit with site-based labour delivery.
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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Frequently asked questions
How many manned guarding companies are there in the London?↓
What counts as a manned guarding company in this list?↓
Which are the largest manned guarding companies in the London?↓
What do manned guarding companies in the London actually do?↓
How does London manned guarding compare internationally?↓
How is this list built and how fresh is the data?↓
How big are the typical manned guarding companies in the London?↓
Are these mostly new or established manned guarding companies?↓
What SIC codes does this use?↓
What buying signals should I look for?↓
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