[5][11] Gunaratnam came to Colombo hoping to get a job as a representative of a film distribution company in Sri Lanka.

When the company was bought by Chittampalam Abraham Gardiner and ruled under a new administration called Ceylon Theatres, he worked for about three months before retiring in 1941 and buying the soft drink business at No.

[13] Even though the story of the film was chosen by imitating the then popular Hindi film Bari Behen, several new faces were introduced into Sinhala Cinema, who later became pillars in Sinhala cinema, including: Prem Jayanth, Florida Jayalath, Dommie Jayawardena, Shanthi Lekha and David Dharmakeerthi.

[9] In 1965, Gunaratnam was instrumental in inviting famous Indian actor M G Ramachandran (MGR) to visit Sri Lanka.

[5] The film introduced Karunaratne Abeysekera as a lyricist, T. B. Ilangaratne as a dialogue writer and Christy Leonard Perera as an actor.

Group of Companies, Fuji Graphics Ceylon Ltd. And Photo Kina Ltd. Apart from that, he was the Managing Director of Cine Sounds Sales and Services Ltd., Union Carbide Ceylon Ltd., Asbestos Cement Industries Ltd., Alhambra Hotels Ltd. And United Spinning and Weaving Mills.

They were temporarily stored at the Hendala industrial complex until the foreign engineers were to install them at the weaving mills in Ja-Ela in August 1983.

[19] In the following years, he produced many commercially successful films such as Duppathage Duka (1956), Suraya (1857), Vana Mohini (1958).

[9][21] Gunaratnam was responsible for half of its production of the first color full-length Sinhalese language film Ranmuthu Duwa directed by Mike Wilson.

[9] Then he involved with many blockbuster films such as Dheewarayo (1964), Sura Chowraya (1967), Ataveni Pudumaya (1968), Lakseta Kodiya (1970), Athma Puja (1970) and Hodai Narakai (1973).

[5] Whilst coming out of his office, in the front seat of his car, at a point of turning, two gunmen on a motorcycle had shot him at very close range.

The Commercial High Court later extended its Enjoining Order restraining telecasting, exhibiting, displaying or showing the Sinhala film Sujatha.