Dr. Raghavan joined the University of Kent's School of Political and International Relations in 2005 on a scholarship from the James Madison Trust and received a Master of Arts degree after producing a dissertation on federalism in Sri Lanka.
He then carried out research at the University of Ottawa before returning to the University of Kent in 2008 on another James Madison Trust scholarship to study for his doctorate degree.
He was also an Overseas Research Students Awards Scheme scholar from 2008 to 2011 and a recipient of the Ontario Student Assistance Program award. In 2012 he received a doctorate politics and government from the University of Kent after producing a thesis titled Multimational Federaiism and Sinhala Buddhism. Is there a (In)compatibility? The Case of Ethnonationalism in Sri Lanka.
Dr. Raghavan was a visiting professor at Saint Paul University, research fellow at the Oxford Centre for Buddhist Studies and a visiting research scholar at the University of Colombo's Department of History. He was chairperson and national director of Colombo School for Critical Studies.
He has been a jury member for several film festivals including the OCIC, South Indian Film Federation and Asian Cinema Centre. He organised the Indian Film Festival in Colombo.
Raghavan was appointed adviser to the President of Sri Lanka His Excellency Maithripala Sirisena and director of the Presidential Media Unit in November 2018.