'To describe the making of the loans, or their waiver, as expenditure within the meaning of para 4(1)(b) of Sch 6 is however quite unacceptable. The making of the loan created rights and obligations and the waiver constituted an abandonment of the rights but in neither case was there the kind of expenditure with which para 4(1)(b) is concerned. In any event, by no reasonable stretch of the imagination is it possible to classify the making of the loans or their waiver as expenditure wholly and exclusively incurred “on” the shares and I find it impossible to say that either were reflected in the state or nature of the shares which were sold. The waiver of the loans may well have enhanced their value but what para 4(1)(b) is looking for is, as the result of relevant expenditure, an identifiable change for the better in the state or nature of the asset, and this must be a change distinct from the enhancement of value.'