He is a former Governor of Eastern Province, having earlier served as the Cabinet Minister of Foreign Affairs from 28 January 2007 until he was defeated in the General Elections held on 8 April 2010, losing his seat in parliament.

As a member of the United National Party, Bogollagama was elected to parliament in 2000 for Kurunegala District, and served the Parliamentary Consultative Committees on Finance, Foreign Affairs, Defence, Industrial Development & Investment Promotion, and Power & Energy.

[7] Bogollagama switched political allegiance on 18 November 2004, siding with the United People's Freedom Alliance; the President swore him in as the Cabinet Minister of Advanced Technology and National Enterprise Development on the same day.

He was appointed as the Sri Lankan High Commissioner-designate to the UK by President Ranil Wickremesinghe in October 2023.

[11] Bogollagama attended the 2023 UN peacekeeping ministerial meeting in Accra, Ghana in December 2023 as the special representative of President Ranil Wickremesinghe.