The LFS is run by a committee of officers and ordinary members who are elected at the Annual General Meeting. Changes in italics were approved by the committee in March 2020 due to the unusual circumstances of a postponed AGM, and are to be ratified by AGM in due course.
The current (2020-21) members are:
| Chairman | Alan Rowland |
| Vice Chair | Belinda Cox |
| Hon. Secretary | Michael Williams |
| Hon. Treasurer | Chris Dee |
| Hon. Membership Secretary | Sandra Rowland |
| Ordinary members | Andrew Cleave (2018-2021) |
| André Coutanche (2018-2021) | |
| Tom Dickins (2019-2022) Personal webpage | |
| Trevor Dobie (2018-2021) | |
| Jennifer George (2018-2021) | |
| John Hedger (2018-2021) | |
| Keith Hiscock (2018-2021) | |
| Tim Jones (2019-2022) | |
| Chris Pawson (2018-2021) | |
| Frances Stuart (2018-2021) | |
| Chris Webster (2018-2021) | |
| Co-opted (Annual Report Editor) | Tim Davis |
| Co-opted (Retiring Treasurer) | Roger Chapple |
| Co-opted (Marine Protected Area Advisory Group) |
Robert Irving |
The LFS also honours the following as presidents of the society:
| President | Diana Keast |
| Vice Presidents | Jennifer George |
| John A Harman | |
| Keith Hiscock |
The constitution may be viewed here.