Your Legal Powers Under UK Law

As a security officer, you are not a police constable, but you have significant legal powers derived from common law and statute. These powers are designed to help you prevent crime and protect people and property.

Misunderstanding them can lead to criminal prosecution for assault or false imprisonment, or civil claims against you and your employer.

1. Self-Defence & Defence of Others

This is your most fundamental right. You may use reasonable force to protect yourself or others from harm.

• Necessary and Proportionate: Force must match the level of threat.
• Honest Belief: Your actions are judged based on what you believed at the time.
• No Duty to Retreat: You are not required to back down, though de-escalation is often safest.

2. Preventing Crime & Effecting an Arrest

You may use reasonable force to prevent crime or assist in a lawful arrest.

• Stop crimes such as theft, assault, or damage
• Detain individuals suspected of committing offences

3. Citizen's Arrest

You may detain someone for serious (indictable) offences under specific conditions.

• The person is committing or suspected of committing a serious offence
• Police are not immediately available
• The arrest is necessary to prevent harm, damage, or escape

Your role is to safely detain and hand over the individual to the police. You must not investigate or interrogate.

4. Use of Force on Private Property

You may use reasonable force to remove trespassers from property you are responsible for protecting.

What is "Reasonable Force"?

• Necessary: Is force required, or could the situation be handled verbally?
• Proportionate: Use the minimum level of force needed.

For example, guiding a trespasser away is proportionate, while striking someone is only justified in response to serious and immediate danger.