Worked example 1
A shop security guard grabs a customer's arm firmly and searches her bag without reasonable grounds, causing bruising. The customer consented to enter the shop but not to physical restraint. Advise on battery. [12 marks]
Show solution outline
Elements:
- Direct application of force: Grabbing arm and searching bag — direct physical contact (Cole v Turner — least touching).
- Intentional: Guard intended to grab and search — satisfies intent (Letang v Cooper — accidental contact in negligence context differs).
- Unlawful / no justification:
- Consent: Entering shop ≠ consent to restraint (Collins v Wilcock — implied consent covers normal shopping contact, not forceful grabs).
- Citizen's arrest / shopkeeper's privilege: Requires reasonable grounds for theft — if none, no lawful authority.
- Hostility: Firm grab causing bruising exceeds everyday jostling — hostile in context (Wilson v Pringle — horseplay vs deliberate restraint).
Assault? Customer may also have apprehended immediate force when grabbed — dual liability possible (4.3.1).
Defences: Self-defence fails unless customer threatened guard.
Remedy: Damages for bruising (general) and any medical costs (special).
Conclusion: Guard likely committed battery — compare lawful detention with reasonable suspicion vs unlawful force.