Cadder v HM Advocate [2010] UKSC 43
Cadder v HM Advocate brought Scottish police detention procedure into line with Article 6. A suspect ordinarily requires access to legal advice before and during police questioning from the initial stages of the investigation.
Facts
Peter Cadder was detained by Scottish police under section 14 of the Criminal Procedure (Scotland) Act 1995 in connection with an alleged assault. The statutory scheme permitted detention and questioning for up to six hours without giving the suspect a right to consult a solicitor. Cadder was cautioned and interviewed without legal advice, made admissions and was later convicted of assault and breach of the peace after those answers were used in evidence. Scottish authority had considered the wider safeguards in the system sufficient to secure a fair trial. Cadder argued that the interview breached Article 6 ECHR in light of the Strasbourg Grand Chamber's decision in Salduz v Turkey, which treated access to a lawyer from the first police interrogation as a fundamental protection.
Legal Issue
Was it compatible with Article 6 to question a detained suspect and use the answers at trial when Scottish law gave no opportunity for prior legal advice?
Held
The Supreme Court unanimously allowed the appeal. Salduz established a clear general rule that access to a lawyer should be provided from the first police interrogation unless compelling case-specific reasons justify restriction. The limited detention period, caution, corroboration requirements and later access to legal representation did not compensate for denying advice at the critical early stage. The High Court of Justiciary had therefore erred in treating the Scottish system as compliant without that right. Using Cadder's uncounselled admissions breached Article 6. The Supreme Court remitted the case to the High Court of Justiciary to decide the appropriate disposal, including whether sufficient evidence remained without the interview. It also rejected prospective-only application, while recognising ordinary finality rules for concluded cases.
⭐ Legal Principle
Article 6 ordinarily requires a detained suspect to have access to legal advice before police questioning and during the investigative stage, unless compelling reasons justify a restriction in the individual case. General procedural safeguards do not replace that fundamental protection.
Significance
Cadder caused immediate reform of Scottish criminal procedure and illustrates the domestic effect of clear Strasbourg authority under the Human Rights Act. Emergency legislation introduced access to legal advice, and the modern framework is now principally found in the Criminal Justice (Scotland) Act 2016. Later cases, including Ambrose v Harris, considered when the right is triggered outside formal detention. Later Strasbourg decisions, notably Ibrahim v United Kingdom and Beuze v Belgium, also emphasise reasons for any restriction and overall fairness. Cadder does not make every procedural defect an automatic violation.
Common exam questions about this case
Why were Scotland's other procedural safeguards insufficient?
A caution, a short detention period, corroboration requirements and access to a solicitor later in proceedings did not address the suspect's vulnerability during the first police interview. Legal advice at that stage helps the person understand the right to silence and the consequences of answering. Article 6 therefore required the opportunity for advice before questioning, subject only to compelling case-specific reasons.
Did Cadder impose an absolute rule with no possible restriction?
No. The governing Strasbourg principle allowed access to be restricted where compelling reasons existed in the individual case. Any restriction would still be examined closely for its effect on overall trial fairness. The defect in Cadder was a general statutory system that denied the opportunity as a matter of course, rather than a justified response to exceptional circumstances.
What was the practical effect of the decision on Scottish law?
It invalidated the assumption that suspects could routinely be questioned during section 14 detention without legal advice. Scotland enacted urgent reforms providing access to solicitors, followed by a broader statutory framework in the Criminal Justice (Scotland) Act 2016. Final cases were not automatically reopened, but pending cases and future police practice had to comply with the Article 6 requirement.