Posted on 21 May 2024 by OpenRent Is subletting illegal in the UK? Find out what subletting involves and the legal implications for tenants and landlords. Subletting occurs when a tenant lets out part or all of the property to someone else, who then becomes a subtenant. The tenant requires permission from the landlord to sublet and this should be made clear in the tenancy agreement. What is subletting?There are several reasons why a tenant might ...