Event Security: How Many Guards Do You Need?
One of the first questions anyone planning an event asks a security company is how many guards they’ll need. It’s a fair question, and the honest answer is that it depends on the event.
Too few guards and a problem gets out of hand before anyone can deal with it. Too many and you’re paying for people standing around. This guide explains how event security is worked out, the typical ratios used, and what to ask when you hire a security company for an event.
The Short Answer
There’s no single legal ratio that applies to every event. As a rough starting point, many events plan for around one security officer per 100 guests, then adjust up or down depending on risk.
Lower risk: seated daytime events with no alcohol, such as conferences, family days or some weddings, can sit at around one per 150 to 300 guests
Medium risk: standing events, evening parties and events with a bar often work at around one per 100
Higher risk: large standing crowds, late finishes, heavy drinking or a history of trouble can mean one per 50 or fewer
These are planning starting points only. The final number comes from a risk assessment.
Why There’s No Fixed Number
Three things decide how many security guards an event actually needs:
Your risk assessment: this looks at the crowd, the venue, the time and the risks, and sets the level of cover
Your licence conditions: if the venue or event has a premises licence, the licensing authority and police can set a minimum, such as one SIA door supervisor for every 100 customers
Your insurer: some policies require a certain level of security before they’ll cover the event
A good security company will ask about all three before giving you a number.
What Pushes the Number Up
The more of these apply, the more guards you’ll need:
Alcohol: a bar or alcohol served all evening raises the risk considerably
A standing crowd: people standing and moving are harder to manage than people seated
Late finish: trouble is more likely later in the evening and at closing time
Large capacity: more people means more entry points, more queues and more to watch
Several entrances and exits: each one needs covering
Outdoor or open sites: fields and large venues have long perimeters
Young or high-energy crowds: these typically need closer supervision
VIPs, cash or valuables: these need dedicated staff
Past trouble: previous incidents at the venue or similar events
Fixed Posts on Top of General Cover
The ratio covers general crowd supervision. On top of that, most events need guards in fixed positions:
Entrances: searching, ticket checks and managing the queue
Exits and fire doors: keeping them clear and preventing unauthorised entry
VIP or backstage areas: controlling who gets in
Bars and cash handling areas: protecting staff and takings
Car parks: vehicle crime and safe departure
A supervisor: one person coordinating the team and talking to the organiser
As an illustration, a standing evening party for 500 guests with a bar might work at around five general guards on the one-per-100 rule, plus a couple on the entrance and a supervisor. That brings it to roughly eight. A daytime seated event for the same number with no bar could manage with considerably fewer. These aren’t fixed figures. They show how the numbers build up.
Security Guards, Stewards and Door Supervisors
These roles are often confused, and the difference matters because of licensing and cost.
Door supervisors: SIA-licensed officers who carry out licensable security duties, such as controlling entry and dealing with trouble at licensed events
Security guards: also SIA-licensed, covering patrols, access control and site protection
Stewards: often unlicensed and used for directing people, checking tickets and queue management, but not for licensable security duties
If your event is licensed, with alcohol or public entertainment, you’ll normally need SIA-licensed door supervisors, and the licensing authority may check badge numbers. Always confirm your own licence conditions rather than assuming.
Security for Different Kinds of Events
Weddings and private parties: often lower risk, but alcohol, late finishes and uninvited guests can still cause problems; a couple of guards on the entrance and at the bar is common
Festivals: large sites, long perimeters, camping and big crowds mean more staff, plus planning for searches, medical access and emergency evacuation
Corporate events and launches: focused on access control, VIP protection and protecting equipment
Community and charity events: often outdoor, with open boundaries and a mixed crowd
Concerts and club nights: high-density standing crowds, usually at the top of the ratio range
Martyn’s Law
Martyn’s Law, formally the Terrorism (Protection of Premises) Act 2025, places new duties on venues and events open to the public. It applies in tiers based on capacity, and the standard tier starts at venues and events with a capacity of 200. The Security Industry Authority is the regulator.
If you run a public event, check whether the law applies to you and what you must do. A good security company can help you plan sensible, proportionate measures such as evacuation, lockdown procedures and staff awareness.
Protecting the Event Site Overnight
Security doesn’t only matter while guests are on site. Staging, sound equipment, marquees and hired kit often sit on an open site for days before and after an event. A field or venue during set-up can look a lot like a construction site or building site, with valuable equipment and no one around at night.
For this you can use:
Overnight guards: an officer on site while the equipment is in place
K9 security dogs: a handler and guard dog patrol covers a large, open area quickly and deters theft
CCTV towers: mobile camera units that work without mains power
Mobile patrols: scheduled checks if full-time cover isn’t needed
Combining these protects your equipment and your deposit.
How to Plan Your Event Security
Know your numbers: expected attendance, peak times and capacity
List the risks: alcohol, late finish, VIPs, cash, previous trouble
Check your licence conditions: and ask your insurer what they require
Map the site: entrances, exits, bars, backstage areas and car parks
Talk to a security company early: ideally weeks before, not days
Agree the plan in writing: numbers, roles, hours, briefing and who the contact is on the day
What to Ask an Event Security Company
Are all door supervisors and guards SIA-licensed? Ask for licence numbers and check them
Do you have experience of events like mine? Weddings, festivals and club nights are different
Are you insured? Ask to see public liability cover
How is the team briefed and supervised? Reliable companies have a clear structure
What happens if someone doesn’t turn up? There should be a backup plan
Can you help with the risk assessment? A good company will be involved
Can you cover set-up, the event and breakdown? Including overnight
Frequently Asked Questions
How many security guards do I need for my event?
There’s no fixed legal number. A common starting point is about one per 100 guests, reduced for low-risk events and increased for higher-risk ones. A risk assessment sets the final figure.
How much does event security cost?
It depends on the number of guards, the hours, the type of event and whether you need SIA door supervisors. A quote based on your event details is the only reliable way to get a price.
Do I need SIA-licensed security at my event?
If your event involves licensable security duties, such as door supervision at a licensed event, then yes. Check your premises licence and local authority requirements.
Do I need security for a wedding?
Not always, but many venues and couples hire a couple of guards for entry control, uninvited guests and late-evening supervision, particularly when alcohol is served.
Can you provide security for a festival?
Yes, event security can scale up for large sites, with guards, supervisors, patrols and overnight cover for equipment.
How far ahead should I book?
As early as possible, and certainly once you know your date, venue and expected numbers. Busy periods book up quickly.
Can security dogs be used at events?
Yes, in some cases, for example overnight patrols of an open site or detection work at entry points where required. Whether they’re suitable depends on the event and venue.
Event Security With Pride K9
Pride K9 is a security company based in Walsall, providing event security alongside security guards, K9 security dog handlers, detection dogs, mobile patrols and CCTV for events across the UK. We have around 30 years of experience, SIA-licensed officers and ISO-certified management systems.
Every event is assessed individually, so the number of guards, the roles and the hours match your crowd, your venue and your licence conditions. To talk through security for your wedding, festival, party or corporate event, get in touch with the team today for a tailored quote.