With the English Devolution and Community Empowerment Act 2026 (the “Act”) having received Royal Assent on 29 April 2026, the long-anticipated abolition of so-called 'upwards-only' rental clauses is now confirmed. When the relevant parts of the Act relating to upwards-only reviews come into force, which is expected in 2027, the change will represent one of the most significant reforms to commercial leasing in decades. What is an upwards-only rent review?