sentences:  Bishop McMahon was Chairman of the Essex Church Leaders Consultative Council from 1984 to 1993, and he is a member of the Barking Church Leaders Group and the London Church Leaders Group.Bishop McMahon is Patron of a number of groups and organisations, notably Vice-President of Pax Christi since 1987.He was a founder member of the Movement for Christian Democracy and together with Lord Alton visited refugee camps and homes in Albania in September 1999.