This Q&A considers how long a notice seeking possession served under section 8 of the Housing Act 1988 (HA 1988) lasts and when it is deemed to have expired. HA 1988, s 8(1) provides, materially, as follows: ‘The court shall not entertain proceedings for possession of a dwelling-house let on an assured tenancy unless— (a) the landlord or, in the case of joint landlords, at least one of them has served on the tenant a notice in accordance with this section and the proceedings are begun within the time limits stated in the notice