Angela Ann Knight CBE was the chair of the Office of Tax Simplification. She was replaced on 18 March 2019. Previously she was the Chief Executive of Energy UK, the trade association for the energy industry. Earlier, she was the Chief Executive of the British Bankers' Association and, before that, a Conservative Party Member of Parliament representing the constituency of Erewash from 1992 to 1997. She also served as Economic Secretary to the Treasury from 1995 to 1997.