Based on extensive personal interviews with more than one hundred MPs, Mancuso's is the first investigation of British legislative ethics to take a systematic approach. She identifies significant divergence in ethical attitudes and divides MPs into four types: the Puritans, who stake out the moral high ground; the Servants, who conform to the traditional ideal of the MP as public-spirited constituency advocate; the Muddlers, who are not bothered by personal conflicts of interest; and the Entrepreneurs, who use their position to achieve any end not explicitly prohibited. The implications of this unexpectedly diverse ethical ecosystem are explored along with various possibilities for reform. All those interested in the British Parliament and parliamentarians will find this book, with its unique insights into Westminster, essential reading.