Security • Safety • Preparedness

Security, Safety & Preparedness.

Practical guidance around Martyn’s Law security, event operational planning, risk assessments, emergency and evacuation planning, mitigation measures and the documentation that helps turn a security plan into an organised operation.

National Terrorism Threat
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Pre-Event Security Planning

Good Security Begins Before the Event.

Security should not begin when officers arrive at the venue. The effectiveness of the deployment depends on what has already been considered: the event profile, site layout, expected attendance, access arrangements, known hazards, crowd movement and how incidents will be managed.

Early operational planning allows security requirements to be considered alongside event management, crowd safety, medical provision, fire arrangements and emergency procedures.

The objective is not paperwork for its own sake. Documentation should give the people delivering the operation a clear understanding of what is expected, how decisions are made and what happens when normal operations change.

01
Plan Understand the event, venue, attendance, timings and operational requirements.
02
Assess Identify hazards, threats, vulnerabilities and people who may be affected.
03
Mitigate Use proportionate controls to remove or reduce identified risks.
04
Prepare Brief teams, confirm communications and understand emergency arrangements.
05
Review Monitor conditions, record incidents and capture lessons for future operations.
Official Regulatory Updates

Martyn’s Law Latest Updates.

The latest official GOV.UK material relating to Martyn’s Law and the Terrorism (Protection of Premises) Act 2025. This feed updates automatically as new government guidance and regulatory information is published.

Live GOV.UK feed
Checking the latest official Martyn’s Law updates…

Official guidance takes precedence over website summaries. Organisations should check current Home Office and Security Industry Authority information when determining whether premises or events are in scope and what duties apply.

Event Security Planning

Security Starts Before Deployment.

Effective event security should form part of the operational plan from the outset. Pre-planning allows the organiser, venue, security team and other relevant stakeholders to identify risks, agree responsibilities, prepare mitigation measures and understand how the operation should respond when conditions change.

Operational Process

Plan. Assess. Prepare. Respond.

Risk assessment, crowd management, security deployment, communications, emergency procedures and evacuation arrangements should operate as one coordinated plan.

01

Understand the Event

Review attendance, audience profile, timings, venue layout, transport arrangements, surrounding activity and each operating phase.

Attendance Site Layout Ingress / Egress Timings
02

Risk Assessment

Identify hazards, threats and vulnerabilities, consider who may be affected and determine appropriate control measures.

Crowds Crime & Disorder Vehicles Fire Security Threats
03

Security & Crowd Deployment

Define staffing levels, supervision, entrances, search arrangements, crowd-management positions, restricted areas, patrols and escalation routes.

SIA Personnel Stewarding Searches Access Control
04

Emergency & Evacuation Planning

Prepare decision-making arrangements, emergency routes, emergency-service access, places of safety, public messaging and accessible evacuation procedures.

Evacuation Invacuation Lockdown Emergency Access
05

Mitigation Measures

Controls may include access restrictions, barriers, search procedures, CCTV, body-worn video, lighting, patrols, perimeter security, vehicle mitigation and improved communications.

CCTV Body-Worn Video Barriers Patrols
06

Brief, Monitor & Review

Personnel should understand their responsibilities before deployment. Supervisors should monitor conditions throughout the event and review incidents and lessons afterwards.

Briefing Radio Checks Dynamic Risk Debrief
Risk → Mitigation → Residual Risk → Review

Mitigation measures should flow from the risks identified rather than simply being added because they are available. The aim is to remove risk where reasonably possible, reduce what remains and keep the arrangements under review as the event, crowd and operating environment change.

Martyn's Law Security

Preparing for Martyn’s Law.

Martyn’s Law — the Terrorism (Protection of Premises) Act 2025 — introduces protective-security requirements for qualifying premises and events.

The exact responsibilities depend on whether a premises or event falls within scope and the applicable duties. Organisations should follow current Home Office and Security Industry Authority guidance when determining their statutory responsibilities.

Semper Security can support the practical security-planning element by helping organisations consider security deployment, public-protection procedures, communications, emergency arrangements, staff briefings and proportionate mitigation measures.

01
Evacuation Moving people away from danger to an appropriate place of safety.
02
Invacuation Moving people to an appropriate safer location within the premises.
03
Lockdown Restricting movement or access where this can help protect people.
04
Communication Making sure clear information and instructions reach the people who need them.

Need Help Preparing for Martyn’s Law?

Semper Security can support the security-planning element of your preparation, including operational reviews, security deployment, public-protection procedures, emergency arrangements, staff briefings and practical mitigation measures.

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Event Documentation Support

SAG & Operational Document Preparation.

Where an event requires Safety Advisory Group engagement or a structured event-management submission, Semper Security can support the security, crowd-management and operational elements.

Requirements vary depending on the event, venue and local authority. Documentation should therefore be built around the real operating environment rather than relying on a generic template.

Our involvement can help connect the planned security deployment with crowd movement, access control, emergency procedures, communication arrangements and the wider event-management plan.

Event Security Plan
Security Risk Assessment
Crowd Management Plan
Emergency & Evacuation Plan
Security Deployment Schedule
Command & Communication Plan
Ingress & Egress Arrangements
Search & Access Procedures
Incident Escalation Procedures
Security Staff Briefings
Security Position Plan
Post-Event Review Support
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Planning an Event? Bring Security In Early.

Early security involvement makes it easier to align staffing, crowd management, risk assessments, emergency arrangements, Martyn’s Law security considerations and mitigation measures before they become last-minute operational problems.

Important: The national terrorism threat level should always be confirmed through the official MI5 source. Information on this page is provided for general security and event-planning awareness. Semper Security planning support does not replace legal, regulatory, fire-safety or other competent professional advice.