Article 6 of the Treaty on European Union (TEU) provides that the EU will accede to the system of human rights protection of the European Convention on Human Rights (ECHR). Protocol No 9 in the Treaty of Lisbon opens the way for accession. This represents a major change in the relationship between two organisations that have co-operated closely in the past, though the ECHR has hitherto exercised only an indirect constitutional control over the...