| Pevensey Levels SSSI Natural England | 3613.02 ha | | — |
| Broadwater Warren Nature Reserve RSPB | 190.45 ha | | — |
| Buxted Park Deer Park | 90.43 ha | | — |
| Old Lodge Nature Reserve | 68.55 ha | | — |
| Lullington Heath National Nature Reserve | 62.67 ha | | — |
| Eridge Rocks Nature Reserve Sussex Wildlife Trust | 46.55 ha | | — |
| Walshes Park | 28.71 ha | | — |
| Horsted Green Park | 28.69 ha | | — |
| Weir Wood Reservoir Nature Reserve | 11.87 ha | | — |
| West Park Local Nature Reserve | 10.55 ha | | — |
| Uckfield Millennium Green | 8.72 ha | | — |
| Cider House Farm Park | 8.66 ha | | — |
| Hellingly Country Park (Roebuck Park) | 7.48 ha | | — |
| Crowborough Country Park | 6.19 ha | | — |
| Heathfield & Waldron (Millennium Green) | 6.14 ha | | — |
| Tinkers Park | 5.2 ha | | — |
| Hempstead Meadow Nature Reserve | 4.67 ha | | — |
| King Georges's Playing Fields Park | 4.42 ha | | — |
| Normans pond and Woodland | 4.07 ha | | — |
| Goldsmith's Recreation Ground | 3.67 ha | 🐕 | — |
| Hospital Green | 3.06 ha | | — |
| Wolfe Recreation Ground | 2.76 ha | | — |
| Framfield Recreation Ground | 2.15 ha | | — |
| Punnetts Town Recreation Ground | 1.76 ha | | — |
| Penns in the rocks | 1.71 ha | | — |
| Fin Field | 1.65 ha | | — |
| Silver Jubilee Recreation Ground Crowborough Town Council | 1.57 ha | | — |
| Jubilee Park | 1.41 ha | | — |
| Luxfords Field | 1.09 ha | | — |
| The Tye | 1.08 ha | | — |
| Adam's Field park | 1.03 ha | | — |
| Steam Way Dog Park | 1.03 ha | | — |
| Halley Park | 0.13 ha | | — |
| Magic Garden Herstmonceux Castle Estate | 0.05 ha | | — |