Christopher served in the Australian House of Representatives from 1993-2019. During this time, he was in the Liberal Party Leadership Group for 10 years, Leader of the House of Representatives for six years, and served in Cabinet for six years.

He was a Minister in the Howard, Abbott, Turnbull and Morrison Governments, holding the portfolios of Ageing, Education, Industry Innovation and Science, Defence Industry and Defence.

Christopher is Chairman of consulting firm Pyne and Partners, Vision 2020, the Australia United Arab Emirates Business Council, the Advisory Board of munitions and weapons company, NIOA Group and the SA Governors Council of the American Chamber of Commerce in Australia, and a Director of the International Centre for Democratic Partnerships and its Foundation. As well, he is a non Executive Director of Canberra based defence manufacturer, Highcom Ltd.

He is an Industry Professor in the University of South Australia Business School.

He is the author of two books – “A Letter to my Children” (2015) and “The Insider” (2020) and the podcast Pyne Time.