440.This section confers a right on a contract-holder, who has received a notice seeking possession under the term of the contract incorporating section 173 (landlord’s notice) or a possession notice specifying the serious rent arrears ground (see section 181), to request a review by the landlord of the decision to give the notice. A request for review must be made to the landlord within 14 days of the date on which the landlord gives the contract-holder the notice (unless the landlord allows additional time).