In recent years, however, some doubt has been thrown upon the validity of this proposition and in Errington v. Errington and Woods [1] . Denning L.J. (as he then was) expressed the view that the test of exclusive possession is by no means decisive [2] . Immediately before this pronouncement his Lordship had said: "The classic definition of a licence was propounded by Vaughan C.J. in the seventeenth century in Thomas v. Sorrell [3] . "A dispensation or licence properly passeth no interest nor alters or transfers property in any thing, but only makes an action lawful, which without it had been unlawful" [4] . The difference between a tenancy and a licence is, therefore, that, in a tenancy, an interest passes in the land, whereas, in a licence, it does not. In distinguishing between them, a crucial test has sometimes been supposed to be whether the occupier has exclusive possession or not. If he was let into exclusive possession, he was said to be a tenant, albeit only a tenant at will (See Doe v. Chamberlaine [5] , and Lynes v. Snaith [6] ), whereas if he had not exclusive possession he was only a licensee: Peakin v. Peakin [7] . This test has, however, often given rise to misgivings because it may not correspond to realities. A good instance is Howard v. Shaw [8] , where a person was let into exclusive possession under a contract for purchase. Alderson B. said that he was a tenant at will; and Parke B., with some difficulty, agreed with him, but Lord Abinger said that "while the defendant occupied under a valid contract for the sale of the property to him, he could not be considered as a tenant". Now, after the lapse of a hundred years, it has become clear that the view of Lord Abinger was right" [9] . Then he added: "The test of exclusive possession is by no means decisive" [2] . This statement seems to have been reaffirmed in Cobb v. Lane [10] but it was pointed out that it was in conflict with the test applied in older cases though in conformity with the decisions in Foster v. Robinson [1] and Marcroft Waggons Ltd. v. Smith [2] . But Facchini v. Bryson [3] was made the occasion by Denning L.J. to mention that many cases had lately come before the courts where an occupier had been held to be a licensee and not a tenant. In addition to those noted in Errington v. Errington and Woods [1] he mentioned three others, two of which were unreported, and then went on to say that in all the cases where an occupier had been held to be a licensee there had been "something in the circumstances, such as a family arrangement, an act of friendship or generosity, or such like to negative any intention to create a tenancy". Thereafter he added: "In such circumstances it would be obviously unjust to saddle the owner with a tenancy, with all the momentous consequences that that entails nowadays, when there was no intention to create a tenancy at all. In the present case, however, there are no special circumstances. It is a simple case where the employer let a man into occupation of a house in consequence of his employment at a weekly sum payable by him. The occupation has all the features of a service tenancy, and the parties cannot by the mere words of their contract turn it into something else. Their relationship is determined by the law and not by the label which they choose to put on it." [2] . Subsequently, Viscount Simonds in Wheeler v. Mercer [3] denied the validity of the conclusion of Lord Abinger to which Denning L.J. gave his assent in Errington's Case [1] and, finally, in Addiscombe Garden Estates Ltd. v. Crabbe [4] , Jenkins L.J. said: "We were also referred by Mr. Blundell to Errington v. Errington and Woods [1] . In that case it was held that in very unusual circumstances a lady was a licensee, and entitled to remain in occupation of premises so long as she paid the instalments on a certain mortgage; and in the course of his judgment, Denning L.J. said: "The test of exclusive possession is by no means decisive" [5] . I think that wide statement must be treated as qualified by his observations in Facchini v. Bryson [6] ; and it seems to me that, save in exceptional cases of the kind mentioned by Denning L.J. in that case, the law remains that the fact of exclusive possession, if not decisive against the view that there is a mere licence, as distinct from a tenancy, is at all events a consideration of the first importance. In the present case there is not only the indication afforded by the provision which shows that exclusive occupation was intended, but there are all the various other matters which I have mentioned, which appear to me to show that the actual interest taken by the grantees under the document was the interest of tenants, and not the interest of mere licensees." [7] . With the legal propositions involved in this statement Parker and Pearce L.JJ. agreed and it must be taken as beyond doubt that in cases where there is a real contest between the issues of lease and licence the problem may be solved by considering whether the right which is conferred is a right to the exclusive possession of the property in question. This, however, does not deny that exceptional cases may arise in which it will be seen that a right to exclusive occupation or possession has been given without the grant of a leasehold interest. But if, as Denning L.J. himself agreed, the relationship created between the parties by a particular transaction is to be determined by its substance and not by its mere form, I am unable to see that the fact that a particular transaction may have been induced by ties of kinship, or by friendship or generosity could operate to bring it within this exceptional class. Such considerations cannot operate to transmute a lease into a licence or a licence into a lease. Indeed, one might venture to observe that until the effect of the transaction had been determined it would be impossible to appreciate the extent of the grantor's generosity or to know how far the ties of kinship or friendship had carried him. Upon examination it will, I think, be seen that this exceptional category is constituted by cases in which the facts do not give rise to a contest of the character abovementioned. The present case is clearly not such a case and the conclusion is inevitable that the relationship of landlord and tenant existed between the parties at the relevant time. Accordingly, the appeal should be allowed and the order of the Supreme Court set aside.