UK Event Stewards, Security and First Aid: What's Actually Required
Direct answer
Three different answers with three different authorities. Stewards: council event guidance recommends 1 per 100 attendees at music events. First aid: St John Ambulance's rough guide is ~2 first aiders per 1,000 attendees with an absolute minimum of 2 per event who have no other role; the Purple Guide replaces flat ratios with an event risk score. Security: there is NO universal SIA ratio — industry practice runs 1 per 100–200 for low-risk events, tightening toward 1 per 75–100 with alcohol or a late licence, but your risk assessment and licensing conditions set the real number.
Stewards are not security — the legal line matters
A steward directs crowds, watches for hazards and helps with evacuation; a security guard controls entry, removes people and handles conflict. In the UK the second role generally requires an SIA licence when contracted. Councils reviewing your event plan expect to see both roles staffed appropriately — and using unlicensed volunteers for door security is the fastest way to lose a licence application.
Practical baseline for a 500-person community event with a bar: ~5 stewards (1/100), 2 first aiders minimum, and SIA security per your risk assessment — typically 3–5. Write the numbers and reasoning into the event plan; that document is what the Safety Advisory Group actually reads.
Assumptions
- Council-published guidance (Maidstone stewarding; council EMAS medical guidance) used as official anchors.
- Licensable events: conditions on your premises licence or TEN can impose specific numbers.
What changes this answer
- Alcohol, late hours, or a young crowd — security tightens to 1 per 75–100.
- Attendance, crowd profile and activity risk move the medical requirement via the risk-score method.
- SIA licensing: paid security guarding must be SIA-licensed; volunteer stewards must not perform security roles.
Sources
- Maidstone Borough Council — event stewarding guidance — tier 1, verified 2026-07-22
- UK SIA security firms (multi-source consensus) — tier 5, verified 2026-07-22
- St John Ambulance — event medical cover (+ council EMAS guidance) — tier 2, verified 2026-07-22
Last checked 2026-07-22. Tiers: 1 government/regulator · 2 industry body · 3 official supplier docs · 4 large surveys · 5 professional material.
Legal information — not legal advice
Rules cited on this page apply to: UK. They were verified against the official sources listed above on 2026-07-22 and can change.Rules often differ by state, province, council or venue and depend on your event's specifics — confirm current requirements with the issuing authority before relying on them.