 He has neither admitted nor denied this fact, however his principal of the school at the time, R I T Alles, has mentioned in his autobiography “My Life” that Udaya participated in the JVP organized student protests.he has claimed that he was a student leader of the Communist Party of Sri Lanka.Gammanpila entered politics in 2000 as a founding member of Sinhala ultra-nationalist political party and was appointed as the Propaganda Secretary and spokesperson for Sihala Urumaya in December 2000 soon after the internal rift which caused 7 out of 15 Central Committee members to leave the party including the much respected party chairman S L Gunasekera and two deputy chairmen.