"Happiness then, is found to be something perfect and self-sufficient, being the end to which our actions are directed" - Aristotle,Nicomachean Ethics. Taking into consideration each of the three ethical theories, virtue ethics, Kantian ethics and utilitarian ethics

• what part does "happiness" play in each one (if any) in determining what is morally correct?
• when/how might the concept of "happiness" come into conflict with a solicitor's duties?

answer with references to UK case law.