## Facts

- The appellants were subjected to stop and search by police officers under section 44 of the Terrorism Act 2000.
- Section 44 permits stop and search without specific suspicion within designated areas.
- The relevant legal framework also involved the Police and Criminal Evidence Act 1984 (PACE), which requires "reasonable suspicion" based on factual evidence for stop and search.
- The case challenged whether the powers given to officers, particularly under section 44, were consistent with legal safeguards and human rights protections.
- The House of Lords considered the balance between effective policing and the protection of individual freedoms under the European Convention on Human Rights (ECHR).

## Issues

1. Whether stop-and-search powers exercised under section 44 of the Terrorism Act 2000, which allow for searches without specific suspicion, breached Article 8 of the ECHR.
2. What constitutes "reasonable suspicion" under section 1 of the Police and Criminal Evidence Act 1984 for stop and search.
3. Whether police officers must have factual evidence, rather than assumptions or personal views, to justify suspicion.

## Decision

- The House of Lords held that section 44 of the Terrorism Act 2000 granted officers excessive discretion, leading to unjustified and invasive searches.
- It was decided that the use of section 44 powers violated Article 8 of the ECHR, which protects the right to privacy.
- The House of Lords clarified that "reasonable suspicion" under section 1 of PACE must be based on factual evidence known to the officer at the time, not merely on general possibilities or subjective beliefs.
- The decision guided police practice by requiring specific, factual details to justify stop and search actions.

## Legal Principles

- "Reasonable suspicion" demands factual evidence available to the officer at the time of the stop, exceeding a general possibility but not necessitating certainty.
- Police powers to stop and search must be exercised within lawful constraints and in accordance with human rights standards, particularly Article 8 ECHR.
- The judgment highlights the need for accountability by mandating officers to document the specific grounds for their suspicion.
- An officer's personal view cannot by itself justify a stop and search; objective justification is required.
- Anti-terrorism measures must comply with human rights obligations.

## Conclusion

The House of Lords in R (Gillan) v Commissioner of Police of the Metropolis established that stop-and-search powers must be supported by factual evidence and subject to ECHR safeguards, limiting arbitrary police discretion and emphasizing the need for accountability and respect for privacy rights.

R (Gillan) v Commissioner of Police of the Metropolis [2006] 2 AC 307 (HL)