How to Win Security Contracts: A Practical Tender Writing Guide
Practical advice for writing winning security contract tenders, from understanding requirements to presenting your value proposition.
By Michael Bryce · 8 March 2026 · Updated 11 March 2026 · 2 min read
Winning contracts through formal tender processes is how security companies grow. But many businesses approach tenders as a box-ticking exercise rather than a sales opportunity. The companies that consistently win understand that a tender is your chance to demonstrate exactly why you’re the best choice.
Understanding the Specification
Read the tender specification at least three times before writing anything. Highlight every requirement, question, and evaluation criterion. Create a compliance matrix mapping each requirement to your response. Missing a single mandatory requirement can result in automatic disqualification, regardless of how good the rest of your submission is.
If a site visit is offered, always attend. The insights gained from seeing the site and meeting the client’s team are invaluable for tailoring your response.
Demonstrating Capability
Don’t just state that you can meet requirements — prove it with evidence. Include relevant case studies from similar contracts, specific methodology for how you’ll deliver the service, CVs of key personnel who will manage the contract, examples of your reporting and communication approach, and references from comparable clients.
Quantify wherever possible. “We respond quickly to incidents” is weak. “Our average incident response time across all sites is 4.2 minutes” is compelling.
Pricing Strategy
Price to win, but not at a loss. Understand your true cost per guard hour including all on-costs, and build in a sustainable margin. Clients are often suspicious of the lowest price — it suggests corners will be cut. Price competitively but justify any premium through clearly articulated added value.
Presentation Matters
A well-formatted, professionally presented tender stands out. Use your branding consistently, include a clear executive summary, structure your response to match the tender questions exactly, and proofread meticulously. If the tender involves a presentation stage, prepare thoroughly — rehearse, use visually engaging slides, and bring the people who will actually manage the contract.
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Michael Bryce
Founder of TacDesk. Writes about SIA compliance, operations, and running a UK security company — from someone who actually works the shifts.
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