It is possible that the case also came within the rule of proprietary estoppel enunciated by Lord Kingsdown in Ramsden vs Dyson(1) : "The rule of law applicable to the case appears to me to be this : If a man, under a verbal agreement with a landlord for a certain interest in land, or what amounts to the same thing, under an expectation, created or encouraged by the landlord that he shall have a certain interest, takes possession of such land, with the consent of the landlord, and upon the faith of such promise or expectation, with the knowledge of the land lord, and without objection by him, lays out money upon the land, a Court of equity will compel the landlord to give effect to such promise or expectation." and Spencer Bower and Turner may be right in observing that that was perhaps the reason why it was held that the promise made by Arun District Council gave rise to a cause of action in favour of Crabb.