The Buddhist Union of HFC- Bambalapitiya has always worked for the well being of the Buddhist students of the school. Even though the Union consists of a small number of students, it has been active and has done much to promote and foster the Buddhist Culture within the school. One such annual activity that Union encourages is the observation of sil. The Buddhist Union has also taken part in many community services. For instance last year the Union, under the guidance of Ms.Jayantha contributed to the upliftment of the cancer patients at the cancer hospital-Maharagama by providing them with essential medicine and dry rations.