CA 16 March 1990. The land in question was an area of nearly five acres owned and occupied by the second respondent G. On the northern side of the site, an area of 0.4 acres, there was a stable block for which planning permission was granted after its erection in 1986. The rest of the site was used for grazing horses. In May 1988 the council served an enforcement notice on G alleging a breach of planning control , namely a change of use of the land to the mixed use of agriculture , stationing a mobile home for residential purposes and stationing two touring-type caravans . G appealed to the SoS on the grounds that planning permission ought to be granted for the development to which the enforcement notice related. G submitted a plan showing a housing development which delineated most of the stable site by a red line and the words "where planning permission ought to be granted for mobile home and caravan". They also maintained that the notice should not have referred to the whole site