Fire safety regulations vary significantly across the four UK nations. We compare the key differences and explain what multi-site organisations need to know.. The Devolution Factor Building regulations and fire safety legislation are devolved matters. Each UK nation has its own framework: England Building Regulations: Approved Document B Fire Safety: RRO 2005 + Fire Safety Act 2021 Building Safety Act 2022 applies Sprinklers: Required above 30m only Scotland Building Regulations: Technical Handbook Section 2 Fire Safety: Fire (Scotland) Act 2005 No equivalent to Building Safety Act (yet) Sprinklers: Required in all new flats (from 2022) Wales Building Regulations: Same as England (ADB) but with Welsh specific amendments Fire Safety: RRO 2005 applies Sprinklers: Mandatory in all new residential buildings (since 2016) Renting Homes (Wales) Act — additional fire safety requirements for landlords Northern Ireland Building Regulations: Technical Booklet E Fire Safety: Fire and Rescue Services (NI) Order 2006 Separate regulatory framework with some unique requirements Key Differences Summary Requirement England Scotland Wales NI Sprinklers in new flats 30m All All 30m Building Safety Act Yes No Partial No Combustibility ban 18m 11m 18m 18m For UK wide fire safety consultancy, contact Magnus Opifex.