This crowd flow design toolbox talk template provides comprehensive guidance for event organisers, venue managers and security teams on safe barrier systems, crowd funnelling and flow control. It addresses hazards such as barrier collapse, crush injuries, trips, and blocked emergency routes. The talk references UK legislation including the Health and Safety at Work Act 1974, the Workplace (Health, Safety and Welfare) Regulations 1992 (Regulation 12), the Provision and Use of Work Equipment Regulations 1998 (PUWER) and the Regulatory Reform (Fire Safety) Order 2005. Practical DOs and DON’Ts are aligned with HSE guidance such as Managing crowds safely and the Using barriers at events publication. Additional resources include the HSE crowd‑density monitoring guide (INDG145) and the British Standards Institution guidance on barrier performance (BS EN 16321). The talk also outlines the importance of regular maintenance checks, staff training records, and incident reporting procedures to ensure continuous improvement. It highlights how integrating barrier performance data with crowd monitoring technology can optimise safety management plans. By following these guidelines, organisations demonstrate due diligence, reduce insurance premiums, and support a safe environment for all attendees, protecting both visitors and staff. Regular reviews of barrier performance and crowd data help maintain continuous safety improvement.