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Physical Security Companies in Cardiff: 184 Active Firms (2026)
Physical security companies provide guarding, key holding and site-protection services for organisations across Cardiff and its surrounding metropolitan area.
Buying centres tend to sit with facilities management, estates, risk, procurement and site operations rather than IT or finance. The better-fit suppliers sell contracted shifts, key holding, mobile patrol cover and access-control support to multi-site property, construction, retail, education, healthcare, leisure and event customers across Cardiff. Engagements are usually operationally heavy: buyers expect rota cover, incident escalation, licence checks, supervisory control and evidence that operatives can work across changing sites. Public-sector and infrastructure work tends to favour firms with documented workforce processes and enough management depth to handle audits, substitutions and out-of-hours response without relying on a single site team.
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Cardiff has 184 actively trading physical security companies in this list, making it a relatively granular local market rather than one defined only by larger contract operators. Reported headcount totals 1,231, which suggests a labour-intensive market with many small guarding and site-protection operators alongside a narrower group able to support larger contracts. For researchers, the useful distinction is less about product category than delivery capacity: key holding and patrol coverage can be relatively local, while education, healthcare, construction and event customers usually need documented supervision, replacement cover and contract governance.
Private security work sits under the Security Industry Authority, an executive non-departmental public body sponsored by the Home Office. GOV.UK describes the SIA as the regulator of the UK private security industry, and the practical trigger is the supply of work under a contract for services where a licensable activity is involved. Manned guarding and key holding therefore carry licensing implications for front-line staff, while directors, partners, managers and supervisors may also need front-line or non-front-line licences when the business supplies operatives under contract. That structure puts compliance administration close to day-to-day workforce planning, not as a separate legal afterthought.
Commercial development appears likely to favour operators that can evidence licence control, supervision and shift continuity across varied customer environments. Smaller firms can remain viable where buyer relationships are local and response times matter, but the path into larger property, healthcare or public-sector contracts tends to require process depth and contract reporting. Consolidation pressure may come less from technology than from labour scheduling, insurance, training records and the cost of maintaining compliant cover. The Cardiff cohort therefore looks set to divide between local service businesses and a thinner layer of contract managers with the operational habits needed for multi-site work.
184
Active firms
2026
7
Above £5M
turnover
49
Since 2022
incorporations
Key facts
About 3% of the trading cohort reports turnover above £5M (7 of 184 firms) — the rest sits below that revenue band.
26% of the cohort was incorporated since 2022 (49 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 contracted work involves a licensable activity, including manned guarding and key holding.
Directors, partners, managers and supervisors may need front-line or non-front-line licences 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 exports; North America was second at £2.8 billion.
Top Cardiff Physical Security companies
Safestyle Security Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, keyholding and alarm response, and CCTV monitoring. Also delivers event and stadium security, crowd management, traffic…
Serves businesses, event organisers, venues, councils and residential clients across Wales, including retail, commercial, construction, sports stadiums, nightlife, hotels, film/TV productions and…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
Goldcrest Security (Services) Cymru Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including static guarding, retail and corporate security, event and film/TV set security, mobile patrols, key holding, and alarm response. Security personnel also support…
Serves corporate, commercial, retail and industrial businesses, TV/film productions, event organisers and public-sector organisations, with an emphasis on Cardiff, South Wales and wider UK clients.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
Overt Security Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides contracted security services including manned guarding, door supervision, mobile patrols, alarm response, key holding and crowd management. Also supplies and monitors wireless video detector…
Serves businesses and site operators across South Wales and South West England, including licensed venues, commercial premises, construction sites and void-property owners.
Financial Health
WeakWeak · Hiring · 57% CAGR over 4y
Location
EAGEL ONE SECURITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including static and K9 guarding, CCTV installation and monitoring, mobile patrols, and keyholding. Also carries out locking and unlocking of premises and security coverage…
Serves businesses, public-sector organisations and site operators needing security coverage, including construction sites, retailers, housing estates, public/private/government offices and event…
Financial Health
StrongStrong
Location
INNOV8 FACILITIES MANAGEMENT LTD
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides facilities management services for commercial, industrial and residential properties, including security guarding and CCTV, fire stopping and fire door work, planned and reactive building…
Serves businesses in commercial and industrial sectors, plus residential customers, across South and South West Wales and England. Buyers include property/site managers and homeowners needing…
Financial Health
DistressedDistressed · -16% CAGR over 3y
Location
SPECIALIST SECURITY CO LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides manned security services to public and private sector organisations, supplying security officers for sites such as campuses, offices and residential properties, and delivering incident…
Serves public and private sector organisations in Wales, including local authorities, universities, property managers and operators of residential, commercial and public-facing sites.
Financial Health
HealthyHealthy · 2% CAGR over 2y
Location
K4 SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, door supervision, CCTV monitoring, mobile patrols, key holding and alarm response. Also delivers event security planning and stewarding, CCTV and…
Serves public and private sector clients across the UK, including commercial, residential, retail, corporate and industrial organisations, plus event organisers.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
GO4GOLD FACILITIES MANAGEMENT LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security services including static guarding, event security, door supervision, CCTV monitoring and alarm response. Supplies security officers for construction sites, retail premises and…
Serves private and public sector organisations needing security staff, including construction sites, retail shops and supermarkets, industrial premises, corporate offices, car parks, events and…
Financial Health
StrongStrong
Location
JSM Management Group Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides security, cleaning and waste removal services for businesses and sites. Services include site guarding, key holding, CCTV monitoring, office and builders cleaning, student end‑of‑tenancy…
Serves businesses and property managers nationwide, especially construction sites, offices, student accommodation operators and facilities teams needing outsourced security, cleaning, waste removal…
Financial Health
StrongStrong · Growing, Hiring · 258% CAGR over 3y
Location
ROCKET SECURITY LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides security services including event and festival security, corporate and hotel door security, static guarding, and mobile patrols, supplying personnel for venues, events, and sites requiring…
Serves B2B buyers responsible for safety at events, festivals, stadiums, hotels and corporate sites, including venue operators and facilities managers, with an emphasis on South Wales clients.
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 3y
Location
Tigerbay Security And Business Services Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Helmeg Security Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
NEOVIZ SERVICES LTD
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
JAR SITE SOLUTIONS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides manned security guarding, event security and crowd management services. Supplies trained security officers and stewards for businesses, venues, schools, care homes and public events, and…
Serves corporate clients, event organisers and venues, schools, colleges, care homes, medical facilities, retailers, offices, hotels and individuals across the UK needing security and crowd…
Financial Health
StableStable · -8% CAGR over 3y
Location
COLLECTIVE CROWD MANAGEMENT LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides crowd management, security, and stewarding services for live events including concerts, festivals, club nights, outdoor and corporate events. Also offers event security planning,…
Serves B2B event organisers, promoters and production companies in Wales, including live music venues, club nights, outdoor events, festivals and corporate event teams.
Financial Health
StableStable · Hiring · 14% CAGR over 3y
Location
CITI SECURITY (CARDIFF) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides SIA‑licensed security guard services including event security for concerts and festivals, door supervision for licensed venues and hotels, close protection and VIP security, and manned…
Serves event organisers, music venues, festivals, hotels, licensed premises and offices, plus residential clients, VIPs and artists, mainly in Cardiff, Wales and London with UK/Europe coverage.
Financial Health
DistressedDistressed · -19% CAGR over 3y
Location
Premier Company Services UK Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides facilities management services including manned security guarding, building security, cleaning, and support staff for commercial properties. Supplies on‑site personnel and contracted…
Serves UK businesses and institutions needing facilities management support, including corporate sites, energy companies, universities, property managers, contractors, residential developments, and…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
CEC ENTERPRISE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
ASSERO EVENT SECURITY LIMITED
Trajectory
3y · 2023–NowFinancial Health
Insufficient historyInsufficient history
Location
BOI SECURITY LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · -25% CAGR over 1y
Location
MKS SECURITY LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
AP Higgs Locksmiths Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
ISEC MANAGEMENT SOLUTIONS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
BAFOL MANAGEMENT SERVICES LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides private security services including security guards for premises, event security for social and corporate functions, VIP and personnel escort services, and protocol or journey management.…
Serves UK businesses, event organisers and private individuals, including private companies, social event hosts, VIPs or at-risk personnel, and organisations training security operatives.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
Chamberlains Security (Cardiff) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -14% CAGR over 4y
Location
PLANET4S SERVICES LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Mane Security Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StrongStrong
Location
NORTH PLUS SECURITY SERVICE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
Safety Risk & Resilience Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
CF24 SECURITY LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Mayfair Ventures Holdings Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable
Location
TITANIUM SHIELD LTD
Trajectory
2y · 2025–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy · 0% CAGR over 1y
Location
Sabre North Security Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Loyal Protection Services Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
ZENRS Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
Willow Resources Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
LOCKSTAR SECURITY SERVICES LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Cardiff Security Ltd Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
K9 Protection Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides manned security services including security guards, mobile patrols, key holding and alarm response. Also installs and maintains CCTV systems, intruder alarms and access control, and supplies…
Serves businesses and homeowners across South Wales, including construction sites, vacant property owners, retailers, farms, student housing operators, holiday rentals/AirBnBs, corporate clients,…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial security services including manned guarding, CCTV monitoring, key holding and alarm response, and mobile patrols. Supplies licensed security officers to protect business premises,…
Serves businesses across a range of industries in South Wales and the West Country, targeting organisations with premises, sites or projects requiring outsourced security support.
Financial Health
WeakWeak · -8% CAGR over 2y
Location
NAVIGATION SECURITY SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides security services including manned guarding, mobile patrols, key holding and alarm response. Installs and monitors CCTV systems and drone surveillance, and supplies security personnel and…
Serves UK businesses and site operators in construction, rail, infrastructure, civils, utilities, critical sites, retail, logistics and commercial property needing outsourced security coverage.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
TARIAN GROUP LIMITED
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides security and risk management services, including uniformed guarding, integrated security technology systems, risk advisory, and preparedness training. Serves sectors such as aviation,…
Serves B2B and public sector clients in regulated and critical sectors, including aviation, healthcare, education, government facilities, utilities, petrochemical, maritime, manufacturing,…
Financial Health
StableStable · Hiring · 26% CAGR over 3y
Location
Castellum Risk Management Group Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
CAUTELA DIAMOND LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -68% CAGR over 4y
Location
Najma Security Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 6% CAGR over 4y
Location
MAS Training Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · Hiring · 87% CAGR over 2y
Location
Red Watch Management Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
CASTLE KEEPSECURITY (NEWPORT) LTD
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
Securum Management Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
DIAMOND SECURITIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -64% CAGR over 4y
Location
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How Cardiff Physical Security companies work and how to sell to them
What they do
Revenue usually comes from contracted labour and response capacity: manned guarding sold by shift or post, mobile patrols and key holding sold on retainer with call-out fees, and event or construction cover priced around days, nights and risk level. Some Cardiff physical security operators add installation or support income from access-control, CCTV and alarm-adjacent work, but the core product is still supervised people, vehicles, procedures and incident evidence. Gross margin depends on roster utilisation, overtime control, travel time, insurance cost and the ability to replace absent operatives without breaching service terms. Small engagements can be single-site cover; larger ones tend to become annual service contracts with reporting obligations.
Who they sell to
Typical buyers sit in facilities, estates, risk, procurement and operations teams at property managers, construction contractors, retailers, schools, healthcare providers, leisure venues and local public-sector bodies. The economic buyer is often a facilities director, estates manager, head of security, operations director or procurement manager, with finance involved when a contract affects several sites or a year-round staffing budget. Most work is sold directly through local relationships, referrals and tender responses; public-sector and infrastructure work is more likely to move through formal frameworks, RFPs and scoring matrices. Short-cycle work covers patrols, key holding and temporary site cover, while manned guarding and multi-site contracts tend to require site surveys, TUPE checks and evidence of SIA control.
What they buy
Most physical security firms tend to spend on tools that make labour delivery auditable. Useful categories include workforce scheduling, time-and-attendance, payroll, invoicing, margin tracking, licence management, right-to-work checks, training records, incident reporting, lone-worker monitoring and digital site logs. They also buy vehicles, fuel cards, uniforms, body-worn equipment, radios, insurance, recruitment support, training provision, accounting, legal advice and bid-writing help. Operators with access-control or CCTV support lines may need field-service software, stock control and data-protection support for images, visitor logs and access records. The sharper pitch is usually around reducing missed shifts, shortening onboarding and giving customers proof of attendance and incident handling.
Why and how to sell to them
Buying intent tends to appear when a Cardiff operator wins a larger contract, takes on multi-site cover, replaces an operations lead, faces an SIA audit, expands patrol routes or starts bidding for public-sector work. Pressure points are practical: licensed staff churn, overtime leakage, paper-based incident records, slow vetting, inconsistent supervisor checks and poor visibility of contract margin. Sellers usually get further by tying the message to contract risk rather than generic efficiency. A credible outbound angle might show how the firm can evidence licence status, confirm attendance, produce customer-ready reports or protect margin during rota changes. Newer firms may also be receptive where founder-led processes are starting to break under contract volume.
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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