Under the Public Order Act 1986, S1 Riot is defined as which of the following?

• A. 12 or more people using or threatening unlawful violence for a common purpose.
• B. 3 or more people using or threatening unlawful violence.
• C. A person using or threatening unlawful violence that causes fear for personal safety.
• D. Disorderly behaviour likely to cause harassment or distress.

Answer: (A)

Riot relies on a large, coordinated group acting with a common purpose, using or threatening unlawful violence. Under the Public Order Act 1986, the threshold is twelve or more people, together, engaged in tumultuous conduct with a shared objective. That shared aim is what distinguishes riot from other offences; it isn’t enough for a small group to clash or threaten violence—the size and the common purpose matter here.

The other options describe different situations. Three or more people using or threatening unlawful violence fits violent disorder, not riot, and it doesn’t require a common purpose or the specific large crowd threshold. A single person using violence or threatening fear relates to other offences (not riot), and disorderly behaviour framed as causing harassment, alarm or distress is a separate offence with its own conditions.