The Society runs and judges the following gardening competitions:-
- All London Championship
- The Almshouses Gardens
- The Almshouses Residents Garden Competition
- The London Hospices Garden Competition
- The London Hospitals Garden Competition
- The London Ambulance Service Garden Competition
- The London Squares Garden Competition
As well as the above the Society Judges the following competitions:-
- Bexley in Bloom
- Bromley in Bloom
- Hampstead Garden Suburb
- Lambeth Housing Estates
- Sutton in Bloom
