Rent reviews have become a sharper operational issue in 2026. For landlords, the question is not simply whether costs have risen or whether a property has been under-rented for several years. For tenants, it is not simply whether an increase feels large. The central question is whether the right rent has been proposed through the right process. There is no single percentage cap that applies across the whole United Kingdom. Housing law is devolved, and the rules in England, Wa