After practising as a barrister in Sydney for a number of years, Woolcott joined the Department of Foreign Affairs in 1981. He served in Australian diplomatic missions in Jamaica, Argentina, the Philippines as Deputy Head of Mission, Consul-General in Honolulu and representative to United States Pacific Command, Deputy Head of Mission in Jakarta, Chief of Staff to the Minister for Foreign Affairs, and Australian Ambassador to Italy. In October 2008, Woolcott was one of several senior officials involved in Australia-US political-military talks. At the talks, Woolcott praised China's diplomatic efforts in south-east Asia, but said there were significant problems in the Philippines, Thailand, Malaysia, Vietnam and Burma. Woolcott also sat on the Executive Board of the World Food Programme. Between 2007 and 2009 he was first assistant secretary of the South East Asia division in the Department of Foreign Affairs and Trade. Woolcott was appointed as the People Smuggling envoy in 2009, leaving the job after just eight months to take up a position as Australia's ambassador to the United Nations in Geneva in 2010. In 2014 he was appointed as Australia's Ambassador for the Environment. Woolcott was a Director for the Sea Law and Ocean Policy Group, the Human Rights Section and the India and Indian Ocean Section. Woolcott has also worked as the international adviser to Bond Corporation and as the Executive Manager International Bid Relations, Sydney Olympic Bid 2000 Bid. In April 2013, under the presidency of Woolcott, the Arms Trade Treaty was adopted by the UN general assembly in New York by an overwhelming majority. This internationally commemorated success will assist in establishing internationally agreed common standards for the national regulation of the conventional arms trade and reducing the flow of unregulated arms. In 2015, Woolcott spearheaded Australia’s negotiating teams at climate talks in the United Nations. He emphasized the pertinent issues of climate change: “Left unchecked, it will magnify existing problems and increase pressure on resources including land, water, energy, food and fish stocks. It has the potential to erode development gains, undermine economic growth and compound human security challenges.” In 2017 Woolcott was appointed an Officer of the Order of Australia for distinguished service to public administration in the field of international relations through senior diplomatic roles, and as a lead negotiator in the non-proliferation and arms control fields.
Personal life
Woolcott is married to Tanya Hollows and has three children, Charles, Nicholas and Isabella.