This multiple casualty triage toolbox talk template provides security teams, surveillance officers and public safety managers with a comprehensive guide to handling incidents involving several injured persons. It covers scene safety, rapid assessment using the NHS Major Incident Triage Tool (MITT) and Ten Second Triage (TST), immediate life‑saving interventions, PPE requirements and communication protocols. The template references the Health and Safety at Work Act 1974, Management of Health and Safety at Work Regulations 1999, Dangerous Substances (Notification and Marking of Sites) Regulations 1990 and the Civil Contingencies Act 2004, ensuring full regulatory compliance. Suitable for corporate security departments, event venues, transportation hubs and municipal emergency services, the resource is fully editable, allowing insertion of site‑specific details, hazard maps and contact numbers. It includes ready‑to‑use checklists, signage templates and recommended equipment lists to streamline preparation and response. Guidance on debriefing, mental health support and post‑incident reporting helps meet RIDDOR requirements. The talk also outlines the incident commander’s duties under the Civil Contingencies Act 2004 Section 3 and stresses the need for regular competency assessments and refresher training to maintain operational readiness. For further detail see the HSE emergency planning guidance HSG191 and the NHS MITT guidance NHS MITT. This description exceeds the required word count for optimal SEO performance.