Department for Communities and Local Government: Use of conditions in planning permission (Circular 11/95) (July 1995).
NOTE ADDED: Paragraphs 56 to 59 of Appendix A of Circular 11/95 have been cancelled by the Model planning conditions for development on land affected by contamination (DCLG).
http://www.communities.gov.uk/publications/planningandbuilding/circularuse