Martyn’s Law, formally the Terrorism (Protection of Premises) Act 2025, is UK legislation requiring qualifying venues and premises to prepare for and protect against terrorist attacks. It is named after Martyn Hett, killed in the Manchester Arena attack in 2017.
For workplaces in scope, the practical duties include knowing who is on site, controlling entry and being able to act fast in an incident. Digital visitor management and live on-site lists sit at the centre of that preparedness. See our full Martyn’s Law visitor management guide.