The Astrobiology Society of Britain (ASB), founded in March 2003, is a learned society for scientists and others interested in the relationship between life and its cosmic environment. This covers a vast diversity of topics and research methodologies, encompassing observational astronomy, theoretical astrophysics, geological expeditions, and laboratory-based microbiology and prebiotic chemistry. The ASB is a highly interdisciplinary forum, with a membership spanning the full spectrum of these topics, and is open to all professional scientists and students interested in the field. Our membership is international. In addition to acting as a nexus for its members and running this website, the ASB publishes a quarterly newsletter and runs workshops and conferences. Our newsletter provides updates on all aspects of astrobiology, from the latest results and news to activities of our members and up-coming international conferences and meetings of astrobiological interest. The ASB also holds annual workshops for members, as well as its own conference every two years, which acts as a focus for discussion in astrobiology.