Physical Security Companies in Reading: 125 Active Firms (2026)
Physical security companies provide guarding, key holding and site protection services for commercial premises in and around Reading.
Demand tends to sit with facilities, estates, property management and operations teams, rather than a standalone security budget. Buyers are usually commercial landlords, industrial occupiers, public-sector sites and property portfolio managers across Berkshire and nearby counties. Engagements are operational and recurrent: site cover, key holding response, patrol schedules, access support, compliance checks and incident reporting. The better-fit suppliers for this page look like established small or mid-market employers, with field-based staff, rota discipline and account management processes that can cope with contract work rather than occasional call-outs.
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Reading has 125 actively trading firms in this physical security cohort, a local base that looks more employer-led than purely freelance. Together, they report 606 employees, with labour concentrated in field roles covering guarding, site patrols, key holding response and contract supervision. The client mix is practical: commercial premises, industrial estates, public-sector properties and property portfolios in Berkshire and nearby counties. The shape is local and operational, with owner-managed providers sitting alongside a smaller group of larger regional contractors.
Private security work in Reading sits under the UK SIA regime when services are supplied under contract and involve licensable activity. GOV.UK describes the SIA as the regulator of the UK private security industry, and licensing applies to activities such as manned guarding and key holding where the contractual test is met. Front-line staff need the relevant licence for licensable work, while directors, partners, managers and supervisors may also need front-line or non-front-line authorisation where a business supplies security operatives. For buyers, that usually turns compliance into a tender requirement, not a back-office detail.
The cohort appears likely to remain employment-led, with service quality tied to supervision, rota cover and incident escalation rather than software features alone. Buyer scrutiny tends to rise when contracts touch public sites, logistics premises or out-of-hours response, so licensing evidence and documented processes should stay central to procurement. Smaller operators may find scope in local responsiveness and specialist premises knowledge, while larger regional contractors have advantages where customers want portfolio cover and consistent reporting. Consolidation pressure is plausible, but the sector still leaves room for firms with dependable staffing and clear compliance routines.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
125
Active firms
2026
6
Above £5M
in turnover
21
Incorporated since 2022
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Key facts
About 4% of the trading cohort reports turnover above £5M (6 of 125 firms) — the rest sits below that revenue band.
16% of the cohort was incorporated since 2022 (21 firms), so a sizeable share is in its first few filing cycles.
The SIA regulates UK private security work where a contract for services involves a licensable activity, including manned guarding and key holding.
Front-line staff need a front-line SIA licence for licensable work, while directors, partners, managers or supervisors may also need a front-line or non-front-line licence when supplying security operatives under contract.
UK security exports were £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.
A US market guide puts the UK security and resilience sector at $32 billion turnover in 2024 and projects the UK physical security market to reach about $12.9 billion by 2030.
Top Reading Physical Security companies
Financial sub-scores
Computed from 3 filingsProvides security services for events, venues and businesses, including SIA-licensed door supervisors, safety stewards, mobile patrols, CCTV monitoring and video analytics, key holding and alarm…
Serves event organisers, venue operators, businesses, educational facilities and warehouses needing security staff, door supervisors, patrols, dog handlers, key holding and alarm response,…
Financial Health
StableStable · Hiring · 793% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides manned security services including static guarding, mobile patrols, event security and concierge security. Also installs and monitors CCTV, manages access control, gates and barriers, and…
Serves businesses, property managers, residential developments, retailers, event organisers and homeowners in Berkshire, including commercial sites, offices, serviced apartments, industrial…
Financial Health
HealthyHealthy
Location
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Financial sub-scores
Computed from 5 filingsProvides security services including event security and stewarding, manned guarding, door supervision, key holding and alarm response, mobile patrols, corporate security, crowd safety management, and…
Serves UK event organisers, sporting and cultural venues/events, corporate clients, and community organisations, especially within the Home Counties, needing outsourced security support.
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides SIA‑approved security guarding and door supervision services for businesses and venues. Supplies trained security personnel monitored by controllers 24/7 to manage access, maintain safety,…
Serves businesses and venues across the UK needing SIA-approved security guarding and door supervision.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides SIA licence training courses including door supervisor, security officer, CCTV operator and first aid qualifications. Also supplies security personnel and services for retail, events,…
Serves individuals pursuing or renewing SIA security licences and businesses needing security personnel, including retail, events, corporate sites, construction projects and close protection clients…
Financial Health
StrongStrong · Hiring · 124% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsDesigns, installs and maintains security systems for residential and commercial properties, including CCTV, access control, door entry systems, intruder alarms, and security gates and barriers. Also…
Serves homeowners, residential property managers, communal accommodation operators and commercial organisations needing security systems and monitoring for premises and assets.
Financial Health
WeakWeak · Hiring · 7% CAGR over 4y
Location
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Computed from 3 filingsDesigns, installs and maintains security systems for residential and commercial properties, including intruder alarms, CCTV, fire alarms and door entry systems, with options for monitored alarms,…
Sells to homeowners and businesses seeking security systems, including residential customers, commercial premises, and specialist settings such as nursing homes. Also serves buyers needing fire…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 2y
Location
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Computed from 4 filingsFinancial Health
DistressedDistressed · 137% CAGR over 2y
Location
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Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 2 filingsFinancial Health
WeakWeak · Hiring · 199% CAGR over 1y
Location
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Computed from 3 filingsFinancial Health
DistressedDistressed · -50% CAGR over 1y
Location
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Financial Health
N/AN/A
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed · -68% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
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Computed from 5 filingsProvides locksmith services including key cutting, lock installation and repair, access control systems, master key systems, fire door installation and maintenance, and door repairs. Operates a…
Serves a mix of local consumers and businesses, including residents, DIY shoppers, private property owners, commercial premises, and organisations with larger-scale security or maintenance needs.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsDesigns and installs audio‑visual and smart technology systems for residential and commercial properties, including home cinemas, multi‑room audio, AV systems, lighting control, and integrated…
Serves homeowners and corporate/commercial organisations seeking AV, smart home, security and automation installations, with coverage emphasised across Reading, Berkshire, London and the wider South…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides glazing and glass services for residential and commercial properties, including installation and repair of windows, doors and double glazing. Also supplies glass splashbacks, mirrors, locks…
Serves homeowners and commercial property customers, including facilities managers, business parks, offices, showrooms, shopping centres, hotels and schools needing glass, doors, locks and security…
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 2y
Location
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Computed from 5 filingsProvides security services for businesses and properties, including key holding and alarm response, mobile patrols, static and manned guarding, lock and unlock services, and security surveillance to…
Serves businesses, property and site managers, homeowners and community organisations in Bracknell, Wokingham, Ascot, Crowthorne and nearby Berkshire, Surrey and Hampshire areas.
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsProvides private security services including manned guarding, retail and construction site security, event and hotel security, residential protection, bodyguard services, and access control systems…
Serves businesses, public sector bodies and private clients in Bracknell and across the UK, including retailers, hotels, construction firms, corporate offices, healthcare and industrial…
Financial Health
StrongStrong · Growing, Hiring · 68% CAGR over 4y
Location
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Computed from 5 filingsProvides facilities management services including commercial cleaning and hygiene, grounds maintenance and open space care, landscaping for new build developments, manned security guarding, and…
Serves public- and private-sector organisations needing outsourced facilities support, including sites requiring cleaning, grounds maintenance, landscaping, security, street cleansing and waste…
Financial Health
HealthyHealthy · Hiring · 40% CAGR over 5y
Location
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Computed from 2 filingsFinancial Health
WeakWeak · Hiring · 199% CAGR over 1y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · -10% CAGR over 4y
Location
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Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 2 filingsFinancial Health
StableStable · 0% CAGR over 1y
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Computed from 2 filingsFinancial Health
WeakWeak · Hiring · 50% CAGR over 1y
Location
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Computed from 4 filingsFinancial Health
StrongStrong · 0% CAGR over 2y
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Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
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Computed from 2 filingsFinancial Health
DistressedDistressed · -50% CAGR over 1y
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Computed from 2 filingsFinancial Health
StableStable
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Computed from 5 filingsFinancial Health
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Computed from 5 filingsFinancial Health
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Computed from 3 filingsDesigns, installs and maintains security systems for residential and commercial properties, including CCTV surveillance, intruder alarms, access control systems, fire detection, and gates and…
Serves homeowners and commercial premises owners or occupiers in Reading and Berkshire, including businesses needing security for offices, retail sites and other premises.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
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Computed from 5 filingsProvides parking and property management services including car park monitoring using ANPR cameras, permit‑by‑plate systems, parking enforcement, payment kiosks, access control, sensors, signage, and…
Serves businesses and organisations that own or manage car parks, including residential developments, hospitality venues, retail and leisure sites, healthcare providers and education campuses across…
Financial Health
HealthyHealthy · -22% CAGR over 4y
Location
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Provides risk management and security services for organisations operating in complex environments, including physical, maritime and aviation security, crisis management, K9 explosive detection…
Serves businesses, asset owners and public/private organisations in high-risk or complex environments, including aviation carriers and airports, maritime and offshore operators, superyacht owners,…
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N/AN/A
Location
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Computed from 3 filingsInstalls and maintains security systems including CCTV surveillance, access control entry systems, and automated gates for commercial properties and schools. Also supplies gate operators and installs…
Serves commercial property owners and managers, shops, office premises and schools, targeting B2B and educational customers with site security requirements.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 2y
Location
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Computed from 5 filingsDesigns, manufactures and installs automated electric gates and entrance systems for residential and commercial properties, including hardwood, steel and aluminium gates. Also provides perimeter…
Serves private homeowners and country estates, plus schools, local councils and businesses needing gated entrances or perimeter security, mainly across West Berkshire, East Wiltshire, South…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
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Computed from 2 filingsFinancial Health
WeakWeak
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Computed from 5 filingsDesigns, installs and maintains security systems for residential, commercial and education sites, including CCTV systems and monitoring, intruder alarms, access control, automated gates, barriers,…
Serves homeowners, commercial businesses and schools needing property and site security, with projects across Berkshire, Surrey, Hampshire and surrounding areas.
Financial Health
StableStable · Hiring · 18% CAGR over 4y
Location
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Computed from 4 filingsDesigns, installs and maintains security and surveillance systems for residential and commercial properties, including CCTV, access control, intruder alarms, video intercoms and automated gates. Also…
Serves homeowners, commercial businesses and industrial premises in Berkshire needing security, surveillance, fire safety, automation and audiovisual systems.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
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Computed from 5 filingsDesigns, installs and maintains security, fire protection and telecommunications systems for businesses, including CCTV surveillance, intruder alarms, door access control, fire alarms, emergency…
Serves businesses, offices and homeowners in Berkshire and West Berkshire needing security, fire protection and connectivity services, including premises managers and business buyers responsible for…
Financial Health
StableStable · -2% CAGR over 4y
Location
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Computed from 5 filingsInstalls, maintains, and repairs electric gates for residential and commercial properties. Supplies and fits timber, metal, and sliding gates, with access control systems including intercoms,…
Serves homeowners, private clients, corporate clients and industrial site owners in Berkshire and Oxfordshire seeking gate security and access control solutions.
Financial Health
WeakWeak · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsDesigns and installs automated vehicle and pedestrian access control systems, including electric sliding and swing gates, traffic barriers, bollards, blockers, turnstiles and speed gates. Provides…
Serves commercial and domestic property owners across the UK and Ireland, including organisations needing controlled vehicle or pedestrian access for premises, car parks, perimeters and entry points.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed
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How Reading Physical Security companies work and how to sell to them
What they do
Revenue usually comes from contract labour and retained site services, not from one-off security advice. Reading physical security firms typically sell manned guarding, mobile patrols, key holding, alarm response, concierge-style access support and incident documentation as bundled service lines. Pricing tends to mix hourly guard rates, monthly retainers, call-out charges and uplift for unsocial hours, with annual or rolling terms for managed premises. Gross margin depends on rota fill, licence status, travel time and supervisor span of control. Some firms add CCTV monitoring or access-control support, but the core product remains supervised attendance and documented response.
Who they sell to
Buyers are usually facilities managers, estates directors, property managers, operations managers and procurement teams responsible for occupied sites rather than dedicated security chiefs. Single-site commercial premises may buy direct after a referral or local search, while public-sector, industrial and multi-site property work tends to go through tender, approved-supplier lists or framework-style procurement. Sales cycles are often short for cover changes and call-out arrangements, but longer when staff transfer obligations, service credits and reporting duties are written into a contract. Decision-makers usually want evidence of SIA licensing, supervision routines and escalation processes before discussing price.
What they buy
Field-based security employers tend to spend on tools that keep shifts staffed, evidenced and billable. Relevant categories for outbound include rota management, time and attendance, lone-worker monitoring, mobile incident reporting, licence and training record systems, payroll, HR case management, accounting, credit control and CRM. Operational suppliers also buy uniforms, radios, mobile devices, vehicles, fuel cards, insurance, legal advice, bid support and recruitment services. Sellers with cloud, telecoms or cyber propositions should usually frame them around control-room continuity, customer reporting, device management and audit trails, rather than abstract technology upgrades.
Why and how to sell to them
Buying intent often appears when a provider wins a larger portfolio, loses supervisors, adds night cover, prepares for a public-sector tender or receives customer complaints about missed patrols and weak incident evidence. Margin pressure is a useful angle because small changes in scheduling accuracy, overtime control and invoice capture can matter in labour-led contracts. Compliance is another route in: SIA licence tracking, training records and audit-ready reporting reduce the risk of a contract failure. Outbound works better when it references the operating symptom — unfilled shifts, late reports, duplicated admin — rather than a generic efficiency claim.
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
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