Nanton has 19 years' experience in print and broadcast journalism. He began his career in journalism in 1996 as a business reporter with the Daily Newsday in Trinidad and relocated to Tobago In July 2001 where he served as head of operations at the Daily Newsday's Tobago Bureau. For seven years he reported in the fields of politics, health and education while at the Newsday. In April 2003 Nanton joined Caribbean Communications NetworkTV6 in Trinidad as a senior reporter. He left CCN TV6 in August 2005 to become a founding member of Cable News Channel 3. He served as Assignment Editor with the station until his resignation in September 2006. In February 2007 he rejoined Cable News Channel 3 as a Producer of The Early Morning Show before moving on to the position of Senior News Producer. In April 2009, he became an anchor on CNC3 Television's flagship 7pm newscast. In November 2010, Nanton was appointed Deputy Head of News of CNC3 Television. In May 2013, Nanton was promoted to Executive Producer CNC3 Television. In addition to his other portfolios, he also holds the position of Assignment Editor at CNC3 Television. On Friday August 16, 2013, Nanton announced that he was stepping down as a news anchor to give full focus to his new portfolio as Executive Producer.
He has worked as a freelance reporter for the Starbroek News of Guyana, the Tobago News, the Trinidad Express, the Economic Times Magazine for Latin America and the Caribbean, the Trinidad and Tobago Airports Authority Yearbook, the Point Magazine, and the Caribbean Trakker magazine.
Nanton was a columnist focusing on youth affairs with the Tobago News between 2001 and 2003.
In May 2012 he was the only journalist to conduct a one-on-one interview with Canada's Governor General David Johnston during an official visit to Trinidad and Tobago.
In November 2009, he anchored the arrival of Queen's Elizabeth II to Trinidad and Tobago and the opening of the Commonwealth Heads of Government Conference in Port-of-Spain for CNC3 Television.
In January 2010, Nanton traveled to Haiti for five days to report on a 7.0 earthquake that devastated Port-au-Prince and claimed 230,000 lives. He returned to Haiti in February 2010 for six days, for follow-up coverage on the one-month mensiversary of the earthquake. Nanton also reported on the devastation of Grenada following Hurricane Ivan in 2004, on the aftermath of 9/11 in New York City in December 2001 and on the Gambian culture and traditions in 2000, including interviews with descendants of famed African slave, Kunta Kinte. He also covered the FIFA Under-17 World Cup in 2001 and the Commonwealth Heads of Government Meeting in 2009.
He has covered ten general, local and assembly elections in Trinidad and Tobago and the swearing-in ceremonies for Presidents, Prime Ministers and Chief Secretaries.
Nanton was a Trinidad and Tobago Youth Ambassador to The Gambia in 2000 and was granted Honorary Citizenship to, and the Certificate of Futampaf (Boukout) of the West African country, following the Jola rite of passage. He also served as a Trinidad and Tobago Youth Ambassador to St Kitts and Nevis in 2002 and was the feature speaker at the UNESCO Caribbean Youth Gathering for Peace.
Nanton hosted the second and third annual Tobago House of Assembly Youth Excellence Awards in 2004 and 2005.
On May 25, 1999 Nanton and a news photographer were arrested while covering a protest for the Trinidad and Tobago Newsday, one day before the Miss Universe Pageant being held in Trinidad and Tobago. He was charged with police obstruction and resisting arrest but won the matters in court. The arrest and subsequent court matters were documented by international media watchdog, Committee to Protect Journalists, in its 2000 compilation of attacks on the media.