A 'section 8 notice to quit', also known as a 'section 8 possession notice', is so called because it operates under section 8 of the Housing Act 1988.
A “section 8 notice” is used to terminate an Assured Shorthold Tenancy Agreement during the fixed period when a tenant has breached the agreement (e.g fallen into rent arrears).
A landlord cannot legally evict their tenant without obtaining an order for possession from a court first. Before applying to the court for this order, the landlord must serve a “Section 8 notice to quit” form on the tenant. The notice states that the landlord intends to seek possession of the property and states the ground(s) on which possession is sought.