Ethics - book recommendations

Book recommendations (by my friend DB).

• Alasdair MacIntyre - history of ethics - very good on the Greeks. 
• Phillipa Foot - good on how our philosophical concepts of morality are governed by a very Protestant Christian assumption that it's all about actions. And that the actions are somehow objectively right or wrong (God ordained, or, in the absence of God, still somehow not determined by humanity, timeless) rather than flowing from humans. 
• Bernard Williams and Geoffrey Warnock - very good on utilitarianism. (Bernard Williams was married to Shirley Williams for a while - possibly one of the brightest philosophers ever.)