The LFS is run by a committee of officers and ordinary members who are elected at the Annual General Meeting. The following were approved by the 2025 AGM held at Crediton on 8 March 2025.
The current (2025-26) members are:
| Chair | Belinda Cox |
| Vice Chair (role description) | Mark West |
| Hon. Secretary | Michael Williams |
| Hon. Treasurer (role description) | John Shelley |
| Hon. Membership Secretary (role description) | Lucy Lo-Vel |
| Ordinary members | Richard Breese (2023-2026) |
| Andrew Cleave (2024-2027) | |
| André Coutanche (2024-2027) | |
| Trevor Dobie (2024-2027) | |
| Jennifer George (2024-2027) | |
| John Hedger (2024-2027) | |
| Keith Hiscock (2024-2027) | |
| Alan Rowland (2024-2027) | |
| Chris Webster (2024-2027) | |
| Co-opted (Marine Protected Area Advisory Group) |
Robert Irving |
The LFS also honours the following as presidents and vice-presidents of the society:
| President | vacant |
| Vice Presidents | Jennifer George |
| John A Harman | |
| Keith Hiscock | |
| Roger Chapple | |
| Alan Rowland | |
| Sandra Rowland |
The following also provide voluntary services to the LFS, but are not members of the committee:
| Kathy Weston | Annual Report editor |
| Mandy Yates | Field Course organiser |
| Sue Waterfield | Island Representative |
| Tim Jones | Lundy Bird Observatory liaison |
| Chris Dee | Webmaster |
The constitution may be viewed here.