 He gravitated towards the right wing of the Conservative Party, opposing the United Kingdom's membership of the European Economic Community, economic sanctions being placed upon Rhodesia, and the arms embargo on Israel.He also became a prominent member of both the Monday Club and the 'Anglo-Rhodesian Society'.Mitchell became known as a maverick M.P., and was one of 39 Conservatives who defied the Party whip to vote against entry to the EEC in the Commons vote on 28 October 1971.