London corporate & property security
Write a security brief providers can actually quote.
A useful corporate security specification describes the site, coverage, responsibilities and evidence you expect before suppliers price the work. That gives decision-makers a clearer comparison and gives providers the information needed to propose a proportionate scope.
A measured approach
A better brief begins with the operational reality.
A corporate security requirement is not defined by a job title alone. It needs to reflect the premises, operating hours, visitor and contractor flows, access arrangements, internal stakeholders and the operational standard the client expects. These details allow a provider to understand where a visible presence, access support, patrol activity, supervision or reporting may be relevant.
A well-written specification also makes it easier to compare responses on a like-for-like basis. It should show what each supplier is proposing, what is included in the management approach and where assumptions need to be resolved before appointment. This guide can support an informed first conversation with Corporate Security Services or Manned Guarding.
Your specification essentials
Four things a provider needs before it can scope responsibly.
The following headings create a practical structure. They do not prescribe a universal model; the right mix will depend on the client’s property, people and agreed priorities.
Premises and operating pattern
Set out the property type, normal hours, peak periods, access points, shared areas and any changes to the weekly operating pattern.
Roles and visible presence
Describe the intended purpose of coverage: access support, visitor management, patrols, reception presence, contractor interface or another agreed function.
Handover and escalation
Identify key contacts, daily handover expectations, decision authority, after-hours arrangements and how exceptions should be raised.
Reporting and review
Specify which operational records, incident information, actions and service-review discussions the client needs to see.
Compare like with like
Ask for evidence, not just assurances.
A proposal should make clear what is included, who owns each activity and what information will be available to the client. Use these prompts when comparing providers.
| Comparison point | What to ask | Why it helps |
|---|---|---|
| Proposed roles | Which roles are proposed, what are their site responsibilities and which activities require relevant licensing? | It prevents a generic “guarding” label from hiding materially different coverage. |
| Site learning | How will the provider understand the premises, post instructions, contacts and agreed boundaries before the first shift? | It tests whether mobilisation is site-specific rather than generic. |
| Supervision and communication | Who is the operational contact, how are changes handled and how are client decisions reflected in instructions? | It clarifies management and escalation routes. |
| Reporting and incidents | What records can the client expect, how are actions tracked and when will the service be reviewed? | It establishes useful visibility without assuming a particular technology or dashboard. |
| Mobilisation assumptions | What information, timings and client decisions does the proposal depend on? | It surfaces scope assumptions before the service begins. |
A simple route from requirement to a tailored proposal.
Prepare the practical inputs first. Then use the conversation to resolve the items that cannot responsibly be standardised.
Describe the site
Share the operating pattern, access arrangements, key areas and people who need to be supported.
Set the objective
Explain what the service should help the organisation achieve in day-to-day operations.
Compare the approach
Review roles, supervision, handover, reporting and assumptions across proposals.
Agree the mobilisation
Confirm site information, contacts, instructions and review points before a start date is set.
Special Service Security
Operational clarity should remain visible after appointment.
SSS can discuss a corporate or property-security requirement around the site’s actual operating model. The SSS Application supports operational records, client reporting, compliance documentation and agreed deployment visibility within the client relationship.
Questions answered
Useful answers before you make contact.
These answers are general operational guidance. The final scope should be agreed through a site, event or client-specific discussion.
What should a corporate security specification include?
It should explain the premises, operating pattern, purpose of coverage, expected roles, handover arrangements, communications, reporting and review requirements. The detail needed depends on the site.
Can I compare providers by an hourly rate alone?
No. A rate by itself does not show the proposed scope, supervision, mobilisation assumptions, reporting or operational responsibilities. Compare the full proposal and clarify differences before appointment.
Does a provider’s SIA wording confirm the organisation is an Approved Contractor?
No. Individual licensing and the Approved Contractor Scheme are different. Ask the provider to state accurately which status or evidence applies.
Guide notes
Clear guidance. Sound boundaries.
Reviewed 23 September 2026. This guide is practical procurement information from Special Service Security. It uses official and protective-security sources for general principles, not as a statement that a particular site or supplier has a specific status or outcome.
Buying private security services — SIA support ProtectUK physical security guidance
Start with a practical conversation
Start with the site, then shape the service.
Discuss a corporate or property-security requirement with SSS and turn the real operating context into a clear scope of work.
Important: This page provides general operational and procurement information. It is not legal, safety, licensing, employment, tax or data-protection advice, and it does not confirm a site, event, person or service as compliant. Agree the final scope through an appropriate client-specific assessment and written service proposal.