Original sentence: He was a leading opponent of the Campaign for Nuclear Disarmament, and other Left-wing organisations, throughout the 1980s.With fellow Conservative John Bercow - later elected Speaker of the House of Commons - Dr Lewis ran an Advanced Speaking and Campaigning course for over ten years, which trained over 600 Conservatives (including several current MPs) in campaigning and communication techniques
Edited sentence: Dr Lewis was a leading opponent of the Campaign for Nuclear Disarmament, and other Left-wing organisations, throughout the 1980s.With fellow Conservative John Bercow - later elected Speaker of the House of Commons - he ran an Advanced Speaking and Campaigning course for over ten years, which trained over 600 Conservatives (including several current MPs) in campaigning and communication techniques