The Introductory Tenancies (Abandonment Notice) Regulations (Northern Ireland) 2010
These Regulations prescribe the form of notice to be served by the Northern Ireland Housing Executive or a registered housing association where the landlord, having reasonable grounds for believing that a dwelling–house let under an introductory tenancy is unoccupied and that the tenant does not intend to occupy it as their home, has entered the dwelling–house and wishes to take possession of it.