Harris v Birkenhead Corpn (1976) -> as part of a slum clearance scheme, Birkenhead Corporation served a notice on a house, requiring the tenant to vacate the property. The tenant did so: however, the corporation did not follow its usual policy of bricking up such premises. Harris, 4.5, entered the premises and fell out of a top story window. Acting through her mother, she sued the tenant, the landlord and the corporation. Held: only the corporation was occupier and therefore liable to harris.