http://www.legislation.gov.uk/nia/2011/12/schedule/part/2/paragraph/2Caravans Act (Northern Ireland) 2011An Act to amend the law relating to caravans and caravan sites.texttext/xmlenStatute Law Database2017-11-30Expert Participation2016-10-31SCHEDULEAGREEMENTS UNDER PART 1 OF THIS ACTPART 2MATTERS CONCERNING WHICH TERMS MAY BE IMPLIED BY COURT2The review at yearly intervals of the sums so payable.