They say on their website that they are a group of self motivated and funded individuals, based in North London with an interest in spaceflight, astronomy, science fiction and technology in general.
This society was started by the brother of Sir Arthur C. Clarke, CBE, B.Sc, FRAS, FBIS, Fred Clarke.
''The Astronomical Society of Haringey was born out of an idea by the Society's founder and now President Fred Clarke. In 1970 he devised a 'Space Age Exhibition' held at the Arts Centre in Wood Green. One of the guests was the TV presenter and astronomer Patrick Moore who commented that there, seemed to be such an interest in the area for space and astronomy that a society ought to be formed to represent this interest.'' (from ASH website)