BOGI is a not-for-profit community organisation run by volunteers, who are all members. There are no paid or salaried staff. At the end of 2010, BOGI had more than 600 members.

BOGI was formed in 1975 and has a varied membership of people from all walks of life, abilities, and knowledge. Skills vary from beginners to very experienced. Ages range from young, single, family, retired to middle aged.