CA 14 November 1996. W was owner of land that had planning permission for use as a garden centre, with a 1980 agreement under the Town and Country Planning Act 1971 s52 not to sell goods other than those associated with garden use and fruit and vegetables. In 1981 W was granted concessions to sell other goods. In 1987 W was granted planning permission for certain works at the property with the planning authority (A) requiring W to enter into a new section 25 agreement; the main terms to mirror the 1980 agreement. W was concerned he would lose the benefits of the 1981 concessions, but signed the agreement following a side letter from A saying that it included the sale of a range of products identified in the current planning agreement. In 1990 A wrote to W contending that goods being sold contravened the 1987 agreement. In 1991 A were granted an injunction against such breaches. W`s appeal dismissed.