Meaning of trade: general: venture in the nature of trade
The definitions in S989 Income Tax Act 2007 (ITA 2007) and S1119 Corporation Tax Act 2010 (CTA 2010) are quite broad and even circular in some respects. However, it does make clear that activities that, in ordinary language, may not be a full-blown trade can nevertheless be within the charge to tax on trade profits.
The courts have often used the phrase ‘adventure in the nature of trade’ to describe the test which brings activities within trading income. For example, in Edwards v Bairstow and Harrison  36TC at page 225 Lord Simonds said:
‘To say that a transaction is or is not an adventure in the nature of trade is to say that it has or has not the characteristics which distinguish such an adventure’.
The extended meaning in S989 ITA 2007 and S 1119 CTA 2010 is wide enough to bring within the charge on trade profits:
- an isolated transaction; see, for example, CIR v Fraser  24TC498, and
- a speculative adventure that yields an unexpected profit; see Wisdom v Chamberlain  45TC92.
However, not every isolated transaction or speculative adventure that yields a profit will be within the charge. For example, see Leeming v Jones  15TC333.
The profit has to be of an income nature and not a capital accretion and to decide this issue you will have to examine all the surrounding facts and circumstances.
Further guidance on the factors to be considered is at BIM20200 onwards.