Membership of the BMS is for anyone with a personal and/or professional interest in fungi.  The interests of members are wide-ranging and include biochemistry, biodiversity, biotechnology, ecology, evolution, fungal interactions with animals and plants, genetics, molecular biology, physiology, recording, systematics and taxonomy.

Members of the British Mycological Society are supporting fungal science as part of a national and international mycological community. All members of the Society receive an electronic copy of the BMS newsletter in addition to discounts at Society events and other benefits. The Society produces a range of other Journals which can be taken in addition to membership.

There are different categories of membership appropriate to the different interests, and with different fees.  These include full member, student member, associate member and life membership.