Section 180 – Termination of contract on landlord’s notice
413.Where the contract-holder gives up possession of the dwelling on or before the date specified in the notice given under the term incorporating section 173, the contract ends on the specified date. Where the contract-holder fails to give up possession on or before that date, the contract ends on the date that the contract-holder gives up possession or, if a possession order is made, on the date determined in accordance with section 206 (effect of possession order).
414.However, if the landlord withdraws the possession notice before the contract ends, and the contract-holder does not object to this in writing within a reasonable period, the notice will cease to have effect.