‘There are many things which in common colloquial English would not be called a business, even when carried on by a single person, which would be so-called when carried on by a number of persons … for instance, a man who is the owner of offices, that is, of a house divided into several floors and used for commercial purposes, would not be said to carry on a business because he let the offices as such; but suppose a company was formed for the purposes of buying a building, or leasing a house, to be divided into offices, and to be let out, should not we say, if that was the object of the company, that the company was carrying on business for the purpose of letting offices, or was an office-letting company, trying it by the use of ordinary colloquial language? The same observation may be made as regards a single individual buying or selling land with this addition, that he may make it a business, and then it is a question of continuity. A man occasionally buys himself land, as many landowners do, and nobody would say he was a land-jobber or dealer in land. But if a man made it his particular business to buy and sell land to obtain profit, he would be designated as a land-jobber or dealer in land. … so in the ordinary case of investments, a man who has money to invest, invests his money and he may occasionally sell the investments and buy others, but he is not carrying on a business.’
‘In my judgment … it cannot be said that the carrying of a business is constituted by the ownership of an individual of a tenanted house, the collection of the rent, the execution of repairs, and the carrying out of other landlord’s duties.’
‘In the case of a private individual it may well be that the mere receipt of rents from property that he owns raises no presumption that he is carrying on a business. In contrast, in their lordships’ view, in the case of a company incorporated for the purpose of making profits for its shareholders any gainful use to which it puts any of its assets prima facie amounts to the carrying on of a business. Where the gainful use to which a company’s property is put is letting it out for rent, their Lordships do not find it easy to envisage circumstances that are likely to arise in practice which would displace the prima facie inference that in doing so it was carrying on a business. The carrying on of ‘business’, no doubt, usually calls for some activity on the part of whoever carries it on, though, depending on the nature of the business, the activity may be intermittent with long periods of quiescence in between. In the instant case, however, there was evidence before the special commissioners of activity in and about the letting of its premises by the company during each of the five years that had elapsed since it closed down its former tobacco business. There were three successive lettings of the warehouse negotiated with different tenants; there was removal of machinery from the factory area which made it available for use for storage and a separate letting of that area to a fresh tenant; and as recently as October 1968 there was the negotiation of a letting to a single tenant of both the factory area and the warehouse.’
‘I may perhaps be permitted to add that I am not without sympathy for the taxpayers. It is a peculiar feature of United Kingdom tax law that the activity of letting furnished flats or rooms, while it may be a business and, in this case, a demanding and time-consuming business, is not a trade. Formerly the principle operated in favour of the taxpayer whose liability to tax on the proceeds of exploitation of his proprietary rights was exhausted by the Schedule A assessment. Now the proceeds of letting are taxable under Schedule A and the rule operates to the disadvantage of the taxpayer; his income is not earned income and he is not entitled to capital allowances and to the rollover relief for capital gains tax purposes afforded to a person carrying on a trade. The business may, as in this case, occupy much of the taxpayer's free time or even be one which required his whole time attention. The taxpayer may put as much or more work into his business as, for instance, someone whose business consists in arranging licences to fix vending machines on the property of others and who daily or at less frequent intervals collects the proceeds and replenishes the machines. It is not too easy to see why in the modern world a business consisting of the exploitation of the right of property in land should be treated differently from a business consisting of the exploitation of other assets. However, the principle is now too deeply embedded in the law to be altered except by legislation.’
‘… the aspects of that activity which are to be considered, as being indicia or criteria for determining whether the activity is a business, are six in number and were listed by counsel for the Crown as follows: (a) whether the activity is a 'serious undertaking earnestly pursued', a phrase derived from the judgment of Widgery J in Rael-Brook Ltd v Minister of Housing and Local Government[1967] 1 All ER 262 at 266,[1967] 2 QB 65 at 76, or 'a serious occupation, not necessarily confined to commercial or profit-making undertakings', a phrase derived from the speech of Lord Kilbrandon in Town Investments Ltd v Department of the Environment[1977] 1 All ER 813 at 835,[1978] AC 359 at 402, both of them cited to and referred to by the tribunal in their decision; (b) whether the activity is an occupation or function actively pursued with reasonable or recognisable continuity: per Lord 45 Cameron in Morrison's Academy[1978] STC 1 at 8; (c) whether the activity has a certain measure of substance as measured by the quarterly or annual value of taxable supplies made: again per Lord Cameron (at 8); (d) whether the activity was conducted in a regular manner and on sound and recognised business principles: again per Lord Cameron (at 10); (e) whether the activity is predominantly concerned with the making of taxable supplies to consumers for a consideration: per the Lord President (at 6); (f) lastly, whether the taxable supplies are of a kind which, subject to differences of detail, are commonly made by those who seek to profit by them: per the Lord President (at 6) and per Lord Cameron (at 10).’