“‘economic activity’ must therefore be construed as meaning an activity likely to be carried out by a private undertaking on a market, organised within a professional framework and generally performed in the interest of generating profit.”
“It seems to me that the balance of authority is against treating a transaction or activity as economic or as part of a business merely because it results in a consideration or produces income.”
“...was [the activity] (a) a ‘serious undertaking earnestly pursued’; (b) pursued with reasonable continuity; (c) substantial in amount; (d) conducted regularly on sound and recognised business principles; (e) predominantly concerned with the making of taxable supplies to consumers for a consideration; and (f) such as consisted of taxable supplies of a kind commonly made by those who seek to make profit from them.”