Abstract
The article sets out to consider the practice of ethical investment in the light of some basic principles of moral philosophy. After establishing some principles which have been applied to individual or social conduct, it reviews the application of ethics to business, and the precedents established for investment. Because of the links between ethical investment and single‐issue campaigning, there is a detailed consideration of the relationship between campaigning groups and the issues they are concerned with on the one hand, and ethical investment on the other. The conclusion is reached that ethical investment is as much a process as a series of specific aims, and that a diversified ethical fund must consider matters in the round, within the scope of current knowledge, and must avoid an absolutist agenda