Not to be confused with the late 19th and early 20th century civil servant at the Home Office, Sir (Charles) Edward Troup KCB KCVO (1857-1941) John Edward Astley Troup (born 26 January 1955) is a British tax lawyer, and a civil servant at HM Treasury and then HM Revenue & Customs. He spent two periods as a tax partner at the law firm Simmons & Simmons, from 1985 to 1995 and from 1997 to 2004, and was a special adviser to Kenneth Clarke as Chancellor of the Exchequer in 1995-97.