"there is a long line of authority for the proposition that under the Rent Acts, a person may occupy premises as his residence although he is physically absent from the premises, provided that, to put it broadly, the absence is not, and is not intended to be, permanent and either his spouse or some other member of his family is physically in occupation or, at the very least, his furniture and belongings remain in the premises. Thus, to give an easy example, if a statutory tenant of the premises goes away on holiday for a month and leaves his premises empty, but with all his furniture and belongings there, he continues to be a residential occupier. He continues to occupy the premises as his residence. If he goes on a business trip for a long time, the same is true. It becomes a question of fact for the court, in the particular circumstances, as to when or what particular events constitute a cessation of occupation as a resident. Those authorities include the well-known decisions of the Court of Appeal in Skinner v. Geary [1931] 2 K.B. 546 and the case referred to in the case stated, Brown v. Brash and Ambrose [1948] 2 K.B. 247."
" The court has a flexible discretion to fashion a remedy which does justice in the circumstances of the particular case. But, in exercising this discretion, the aim is to award a remedy which does all that is necessary, but no more than is necessary, to prevent B from suffering detriment as a result of having relied on a promise... "
" 255. In such cases the core principle underpinning the grant of relief is that equity will not allow A to go back on the promise made without ensuring that B does not suffer detriment as a result of B's reliance on it. The aim of the remedy is thus to prevent detriment to B in the circumstances which have arisen. 256. In principle, there are two methods of achieving this aim. One is to compel A to perform the promise (or to award a sum of money calculated to put B into as good a position, as best money can do it, as if A's promise had been performed). The other is to award a sum of money calculated to put B into as good a position, as best money can do it, as if B had not relied on A's promise: in other words, to compensate B's reliance loss. Since both methods will in principle achieve the aim of preventing detriment to B, if on the facts both are practicable the court should adopt whichever method results in the minimum award necessary to achieve that aim. "