Running a Security Business: Contract Value, Officer Utilisation, and Margin Management
Security businesses generate predictable recurring revenue from guarding contracts but face constant margin pressure from the National Living Wage and competitive tendering. The ones that grow profitably track officer utilisation, labour-to-revenue ratio, and contract margin with precision.
- The security services business model
- Charge rate vs pay rate: the margin equation
- Officer utilisation and scheduling efficiency
- Contract pricing and annual reviews
- SIA licensing compliance and operational standards
The security services business model#
UK security businesses operate primarily on contracted recurring revenue: clients pay a monthly or weekly fee for security officer provision (manned guarding), CCTV monitoring, keyholding and alarm response, or access control management. The contracted nature of the revenue makes forecasting straightforward — but margin management is complex. Security officers must be SIA-licensed (Security Industry Authority), and the National Living Wage creates a floor cost that rises annually. Contracts are typically won through competitive tender, creating a race-to-the-bottom pricing dynamic that requires strong operational efficiency to maintain margins.
Charge rate vs pay rate: the margin equation#
The fundamental financial unit in manned guarding is the hourly margin: the difference between the charge rate billed to the client and the all-in cost of providing that security officer hour. Charge rate: what the client pays per officer hour — typically £14–22 per hour for standard commercial guarding in 2026. Pay cost: officer hourly pay (at or above National Living Wage, £12.21 per hour in 2026) plus employer NI (13.8% above the secondary threshold), holiday pay (12.07% of pay), SIA licence renewal contribution, uniform, and supervision cost. Fully-loaded officer cost typically runs at 1.3–1.5x the base hourly pay rate. At a £15.50 charge rate and £13.50 fully-loaded cost, your gross margin is £2.00 per hour — 12.9%. Any unexpected cost increase (sickness cover requiring premium-rate replacement, overtime, agency supply) erodes this margin rapidly.
Officer utilisation and scheduling efficiency#
Scheduling efficiency — matching officer hours to contracted requirements with minimal waste — is the primary operational lever for improving security business margins. Inefficiencies: officers travelling between sites (paid travel time that is not charged to clients), gaps between shifts where officers are on standby pay, overtime costs for shifts that cannot be covered by scheduled officers, and agency officer usage when regular officers are absent. Track billable hours per officer per week and the gap between scheduled and actually-billed hours. AskBiz can calculate your effective billable ratio from your roster and payroll data and identify the sites and shifts generating the most cost leakage.
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Contract pricing and annual reviews#
Security contracts typically run for 12–36 months. The key commercial risk: contracts priced against the previous year's National Living Wage become loss-making after NLW increases unless price escalation clauses are built in. Always include a contractual right to annual price adjustment linked to: NLW changes, CPI or RPI inflation, and any SIA licence fee increases. Clients who resist annual price reviews are clients whose contract was priced too aggressively at tender. Calculate the margin on each contract annually: what is the current charge rate, the current fully-loaded officer cost, and the current gross margin percentage? Any contract running below 10% gross margin needs immediate renegotiation or exit planning.
SIA licensing compliance and operational standards#
SIA (Security Industry Authority) licensing is a legal requirement for all front-line security officers in the UK. Door supervisors, security guards, CCTV operators, and keyholders must each hold the appropriate SIA licence. The operational responsibilities for SIA-regulated businesses: tracking licence expiry dates for every officer, funding licence renewals (typically £220 per licence, valid for 3 years), maintaining records of licence checks, and ensuring officers do not work in unlicensed roles. An SIA compliance failure — an officer working without a valid licence — carries significant financial and reputational risk. Build licence expiry tracking into your operational management system and set reminders 90 days before each officer's licence expires.
Winning security contracts: the tender process#
Most commercial security contracts are won through competitive tender. Building a winning tender requires: clear understanding of the client's specific security risk profile, a tailored solution rather than a generic proposal, evidence of SIA compliance and officer vetting standards, references from comparable contract clients, competitive pricing that still maintains viable margin, and demonstrable management capability (24/7 control room, duty management, incident reporting systems). Track your tender win rate: how many tenders submitted, how many won, at what average contract value. A win rate below 20% suggests either pricing issues or a generic proposal approach that fails to differentiate. AskBiz can analyse your tender data to identify which contract types and client sectors you win most consistently.
Using AskBiz for your security business#
Upload your contract data, payroll records, and roster information to AskBiz. Ask: What is my gross margin per contract? Which contracts are running below my target margin threshold? What is my average billable hours per officer per week? Which sites have the highest overtime and agency cost? How many officer licences are due for renewal in the next 6 months? The answers give you the operational and financial intelligence to manage a tight-margin business with precision.
People also ask
How much profit does a security company make?
UK security guarding businesses typically achieve gross margins of 10–20% on manned guarding contracts and EBITDA margins of 5–12% on turnover. Margins are compressed by NLW increases, high labour cost relative to revenue, and competitive pricing pressure at tender. Businesses that achieve above-average margins do so through: operational efficiency (low overtime and agency cost), strong contract pricing with escalation clauses, and a mix of higher-margin remote monitoring and specialist security services alongside standard guarding.
Do security guards need SIA licences?
Yes. All front-line security personnel in the UK require an appropriate SIA (Security Industry Authority) licence to work legally. Licence types include: Door Supervisor (required for nightclub and venue security), Security Guard (required for static guarding and retail security), CCTV Operator (for public space surveillance), Close Protection Officer, and Cash and Valuables in Transit. Each licence requires relevant training (Level 2 Award in relevant specialism plus First Aid) and a DBS check. Licences are valid for 3 years and cost £220 to issue or renew.
How do security companies win contracts?
Security contracts are typically won through: competitive tender responses (often via procurement portals like Contracts Finder or client-specific RFQ processes), direct approach to target clients (facilities managers, property managers, retail operations teams), referrals from existing clients, framework agreement awards (particularly for public sector and NHS contracts), and relationships with commercial property managing agents. The most sustainable new business source is referrals from satisfied existing clients — invest in service excellence and communication as your primary business development strategy.
What is the National Living Wage impact on security businesses?
The National Living Wage directly sets the minimum pay floor for security officers and increases annually. Each 10p/hour NLW increase adds approximately £0.13/hour to the fully-loaded cost per officer hour (including employer NI and holiday pay). On a contract charging £15.50/hour with 2,080 hours per officer per year, a 30p NLW increase adds approximately £780 of annual cost per officer without a corresponding charge rate increase. Security businesses must build NLW escalation clauses into all contracts and proactively renegotiate charge rates annually to protect margins.
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