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Physical Security Companies in London: 3,500+ Active Firms (2026)
Physical security services companies provide manned guarding, key holding and site protection for organisations across London.
Procurement usually sits with facilities, property management, operations, estates and compliance teams rather than a single security buyer. London demand spans commercial landlords, residential estate managers, public-sector bodies and infrastructure operators, with contracts often built around recurring shifts, key-holding coverage, mobile response and supervisor-led reporting. The better-fit suppliers tend to sell service capacity rather than technology alone: trained officers, rostering discipline, incident escalation, vetting records and contract governance. Engagements are normally operationally intensive, with multi-borough coverage and service-level evidence mattering as much as price.
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Some 3,557 physical security services companies are actively trading in London, making this a sizeable local supply base rather than a niche contractor list. Reported employment across headcount-publishing firms totals 10,165 people, though staffing will be concentrated among operators with large guarding contracts rather than the wider long tail. Only 56 companies report turnover above £5M, while 1,079 firms were incorporated since 2022. That mix points to a market with many small or recently formed suppliers, plus a thin upper layer able to bid for higher-value multi-site work.
Security Industry Authority (SIA) licensing is the main regulatory frame for contracted private security work. It applies where security work is supplied under a contract for services and involves a licensable activity, which covers common contracted services including manned guarding and key holding. Front-line operatives need the relevant licence; directors, partners, managers and supervisors may also need front-line or non-front-line licences when their business supplies operatives under contract. For London buyers, that turns compliance into an operating requirement: vetting, training records, incident handling and licence checks sit close to pricing and mobilisation capacity.
London operators appear likely to remain split between contract-heavy employers and a long tail of small providers. Buyer scrutiny has been moving towards proof of licensing, supervision quality, incident reporting and continuity planning, particularly where sites have public access or critical operations. That favours suppliers with disciplined workforce management, but it also raises the cost of staying compliant. Consolidation tends to look more practical in guarding than in advisory security work, because route density, rostering systems and supervisor coverage can be shared across boroughs without changing the underlying service model.
3,557
Active firms
2026
56
Over £5M turnover
London physical security firms
1,079
Incorporated since 2022
London physical security firms
Key facts
About 1% of the trading cohort reports turnover above £5M (56 of 3,557 firms) — the rest sits below that revenue band.
30% of the cohort was incorporated since 2022 (1,079 firms), so a sizeable share is in its first few filing cycles.
The Security Industry Authority (SIA), sponsored by the Home Office, regulates the UK private security industry.
SIA licensing applies where work is supplied under a contract for services and involves a licensable activity, including manned guarding and key holding.
UK security exports reached £12.9 billion in 2024, up 16.6% on 2023 in nominal terms; physical security accounted for 33%, 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, followed by North America at £2.8 billion.
International exporter comparisons are not directly comparable because the Department for Business and Trade uses a different methodology for non-UK countries.
Top London physical security companies
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
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
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
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
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
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
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
2012 SECURITY LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides security services including static security guarding, mobile patrols, keyholding and alarm response, CCTV installation and monitoring, canine dog handling units, residential and housing…
Serves businesses, landlords, housing providers and residential communities across London and the Home Counties that need security cover for occupied, vacant and high-risk properties, including…
Financial Health
WeakWeak · Hiring · 5% CAGR over 2y
Location
NOVUS ALTAIR ALICE LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides private security services including SIA‑licensed security guards, door supervisors, event and corporate security, key holding and alarm response, mobile patrols, CCTV monitoring, close…
Serves UK businesses, public-sector bodies and event organisers needing security support, including industrial sites, warehouses, factories, construction sites, retailers, offices, hotels, schools,…
Financial Health
StableStable · 0% CAGR over 1y
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
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
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
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
Taur Group Services Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services for residential, commercial, hospitality and event settings, including static and mobile guarding, close protection, K9 units, CCTV monitoring, key holding and alarm…
Serves homeowners, commercial premises, hospitality venues, event organisers, VIPs and government or industrial property managers seeking security support in London and the UK.
Financial Health
StrongStrong · Hiring · 97% CAGR over 4y
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
Z E GLOBAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including SIA‑licensed guarding, installation of fire safety and voice alarm systems, and integration of access control, CCTV and gate systems. Also partners with…
Serves business and public-sector clients in airports, heritage sites, immigration, oil and gas, prisons, facilities management and government estates.
Financial Health
HealthyHealthy · Hiring · 78% CAGR over 4y
Location
1ST A.C.E. SECURITY LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides security services for residential and commercial properties, including installation of CCTV, intruder and fire alarms, access control systems, automated gates, barriers and fencing, as well…
Serves homeowners, landlords and commercial property owners or managers across South London, South East London, Central London and Kent seeking property security support.
Financial Health
StableStable · 1% CAGR over 2y
Location
Intraguard Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, alarm response, key holding, event and retail security, and vacant property inspections. Also installs and monitors security…
Sells primarily to businesses needing security, facilities and monitoring services, especially buyers in retail, warehousing, manufacturing, construction, logistics, corporate environments and…
Financial Health
HealthyHealthy · -34% CAGR over 4y
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
SECURITY KEYHOLDING LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides keyholding and alarm response services for schools, businesses, and landlords, including 24/7 alarm call‑out attendance, mobile security patrols, staff escorts, open‑up and lock‑down…
Serves local schools, businesses and landlords or property owners with vacant or void properties across specified London postcode areas, including Bromley, Dartford, East, City, South East, South…
Financial Health
StableStable · -17% CAGR over 3y
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
KENDAL FACILITY MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, alarm response, CCTV monitoring, retail and site security, and reception security staff. Also operates a recruitment platform…
Serves businesses and organisations across London, the South East and Midlands, including retail premises, construction/site operators, offices, and customers needing security staff, monitoring or…
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
Blue 9 Security Limited
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides security and facilities management services including security guarding, CCTV consultancy and installation, key holding and alarm response, fire and traffic marshals, and canine security…
Serves B2B and public-sector buyers, including businesses, event organisers, local authorities and public-space operators requiring outsourced security and facilities management support.
Financial Health
HealthyHealthy · -7% CAGR over 6y
Location
SECURE SECURITY GUARDS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security guarding services for events, retail, construction sites, corporate premises, hotels and parking facilities, including door supervision, access control, patrols, loss prevention and…
Serves businesses and event organisers across London and the UK, including retailers, construction sites, corporate offices, hotels, parking operators and venues needing guarding, door supervision…
Financial Health
StableStable · Hiring · 11% 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
Agile Security Consultancy Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including guards for offices, retail sites, construction sites and hotels, as well as reception and concierge security, mobile patrols, waking watch fire safety…
Serves commercial businesses, property owners/managers and event organisers, including offices, retail premises, hotels, construction and industrial sites, corporate venues, and residential buildings…
Financial Health
HealthyHealthy · Hiring · 23% CAGR over 5y
Location
BGN SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including SIA‑licensed security guards, event security, CCTV monitoring, dog patrols, and reception or concierge staff. Serves businesses, events and properties with…
Serves businesses, corporate offices, commercial buildings, hotels, retailers, event organisers, warehouses, vacant-property owners and residential customers, mainly in London with wider UK coverage.
Financial Health
StrongStrong · Hiring · 23% 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
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
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
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
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
Provides security services including manned guarding, canine detection teams, and security technology systems. Delivers security programmes for airports, corporate sites, and critical infrastructure,…
Serves B2B and public-sector organisations in highly regulated sectors, including airports, corporate sites and critical infrastructure operators, from local UK operations to national and…
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
PRO SENTRY LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides security and building support services for residential and commercial properties, including security guarding, concierge and front‑of‑house staffing, waking watch fire patrols, fire risk…
Serves B2B property managers, landlords and organisations responsible for commercial premises and residential blocks, including clients needing contracted building support staff across the UK.
Financial Health
WeakWeak · -84% CAGR over 3y
Location
STAR LITE FACILITIES MANAGEMENT LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides security and facilities services including manned guarding, mobile patrols, event security, dog handlers, CCTV tower surveillance, concierge and reception staffing, void property protection,…
Serves B2B clients such as property managers, commercial landlords, event organisers, facilities teams and organisations with staffed sites or vacant premises that require security, reception, safety…
Financial Health
HealthyHealthy · Hiring · 44% CAGR over 3y
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
GOLDEN SECURITY & FM LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides private security services including manned guarding, mobile patrols, key holding and alarm response, K9 dog handling units, and security for construction sites, events, corporate offices,…
Serves businesses and event organisers across London and beyond, including corporate offices, construction sites, industrial and warehouse premises, retail outlets, and venues requiring on-site…
Financial Health
HealthyHealthy · Hiring · 83% CAGR over 3y
Location
WARLITE SECURITY LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response, K9 security units, CCTV and perimeter monitoring, construction site security, property…
Serves residential and commercial clients across London and the UK, including homeowners, businesses, event organisers, construction projects, property owners and organisations needing security cover.
Financial Health
StableStable · Hiring · 92% CAGR over 3y
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
HARRIS SECURITY SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, keyholding and alarm response, event security, and vacant property inspections. Also installs CCTV and access control systems and…
Serves businesses, property owners, facilities managers and event organisers needing security, concierge, cleaning and premises support across the UK.
Financial Health
HealthyHealthy · Hiring · 4% 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
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
HK9 SECURITY SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including SIA‑licensed security guards, mobile patrols, key holding and alarm response, lock and unlock services, and canine security. Also supplies fire watch, site…
Serves businesses and organisations across the UK needing site security, including construction, corporate, education, energy, logistics, hospitality/events, manufacturing, retail and vacant property…
Financial Health
StrongStrong · Hiring · 43% 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
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
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
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
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How London physical security companies work and how to sell to them
What they do
Revenue usually comes from recurring service contracts rather than one-off equipment sales. London physical security providers sell officer hours, mobile patrol coverage, key-holding response, site supervision, access control support and incident reporting, with pricing often built around hourly rates, fixed monthly retainers, call-out charges and mobilisation fees. Margins depend on rota fill, wage costs, licence compliance, travel time and supervisor utilisation. Some operators add risk assessments or security audits, but the core commercial model remains labour-led: clients are paying for reliable coverage, escalation discipline and evidence that agreed service levels were met.
Who they sell to
Buyers are usually facilities directors, property managers, estates teams, operations leaders, compliance managers and procurement teams. Typical customers include commercial landlords, residential estate managers, public-sector estates, infrastructure operators and firms with public-access sites. Smaller contracts may be agreed directly for single locations or short-term cover, while multi-site work tends to run through tenders, approved supplier lists, facilities management partners or formal RFP processes. Sales cycles range from a few weeks for urgent cover to several months where TUPE, insurance, vetting and service-level commitments need review before mobilisation.
What they buy
Most London security providers tend to spend on workforce scheduling, time and attendance, payroll, HR, recruitment, training administration, licence checking, incident management and contract reporting. Larger operators may also buy fleet management, mobile workforce apps, lone-worker safety tools, control-room systems, uniform supply, insurance advice, employment law support and bid-writing services. Finance and operations teams are often receptive to billing, debt collection and margin analysis tools because small errors in hours worked, overtime, travel time or charge rates can erode contract profitability. Compliance-led services need to show audit trails rather than generic productivity claims.
Why and how to sell to them
Buying triggers tend to appear when a provider wins a new multi-site contract, loses margin on an existing contract, fails a client audit, changes senior operations leadership or outgrows spreadsheet-led rostering. Headcount growth, higher absence rates, licence renewals and tender deadlines can also create buying windows. Outbound messaging works better when it is tied to missed shifts, delayed mobilisation, weak evidence packs, payroll leakage or slow incident escalation. Security buyers are operationally sceptical, so claims should be framed around controllable outcomes: fewer manual checks, cleaner rota evidence, faster vetting workflows and clearer reporting for client reviews.
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 London
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Frequently asked questions
How many physical security companies are there in the London?↓
What counts as a physical security company in this list?↓
Which are the largest physical security companies in the London?↓
What do physical security companies in the London actually do?↓
How does London physical security compare internationally?↓
How is this list built and how fresh is the data?↓
How big are the typical physical security companies in the London?↓
Are these mostly new or established physical security companies?↓
What SIC codes does this use?↓
What buying signals should I look for?↓
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