ETHICAL investors are starting to use their Pounds 1.5 billion financial clout to push companies to change, and not just to boycott the ethically unsound, a new survey has found. The "Morals and Money" project, completed by Bath and Exeter universities for the Economic and Social Research Council, found that per cent of ethical investors would be prepared to invest in companies "that are failing ethically" in order to reform them. But 41 per cent would still choose to invest only in ethical companies.