High Quality Content by WIKIPEDIA articles! Crabb v Arun District Council EWCA Civ 7 is a leading property and contract case concerning "proprietary estoppel". Lord Denning MR affirmed that where agreements concern the acquisition of rights over land, there is no need for both parties to provide a consideration for upholding the bargain. While promissory estoppel cannot found a cause of action it was held that in the peculiar situation of land, consideration is not necessary at all.