The club, whose namesake was the poet Sappho of Lesbos, met every Tuesday at The Chepstow, a public house in the Notting Hill district of London. The group advertised their meetings in the magazines Time Out London and City Limits.
Until 1981, the club published an eponymous monthly magazine with a peak circulation of about 1,000 copies.
Forster founded and edited the magazine after writing for Arena Three (of the Minorities Research Group), which had folded soon before. Sappho distributed their magazine at their meetings, and also at such lesbian venues as Gateways, a nightclub in Chelsea. Back issues of the magazine are now held in the Hall–Carpenter Archives.