Part 4 Class D of Schedule 2 to the Town and Country Planning (General Permitted Development) Order 1995, SI 1995/418 (SI 1995/418, Sch 2, Pt 4) permits a flexible change of use, so that a building falling within use class A1, A2, A3, A4, A5, B1, D1 or D2 may be used for a use falling within either A1, A2, A3 or B1 for a period of two years. During this two-year period, the building can be used for any use within A1, A2, A3 or B1 use, and can be changed to another