| Hounslow Heath | 89.19 ha | | — |
| Gunnersbury Park | 75.67 ha | | — |
| Syon Park | 75.65 ha | | — |
| Osterley Park National Trust | 57.45 ha | | — |
| Hanworth Park | 56.77 ha | 🐕 | — |
| Bedfont Lakes Country Park. | 51.75 ha | 🐕 | — |
| Chiswick House and Grounds | 26.91 ha | | — |
| Leitrim Park | 23.96 ha | | — |
| Kempton Nature Reserve | 22.69 ha | | — |
| Bedfont Lakes South Side. | 20.62 ha | 🐕 | — |
| Avenue Park | 20.59 ha | | — |
| Huckerby's Meadows London Wildlife Trust | 19.95 ha | | — |
| Boston Manor Park | 18.1 ha | | — |
| The Pitts | 16.9 ha | 🐕 | — |
| Lampton Park | 16.56 ha | | — |
| Chiswick Rugby Football Club | 15.94 ha | | — |
| Dukes Meadows | 9.03 ha | | — |
| Bedfont Park | 8.4 ha | 🐕 | — |
| Cranebank | 7.97 ha | | — |
| Ludlow Road Open Space | 7.46 ha | 🐕 | — |
| Glebelands Playing Fields Sport Zone | 6.99 ha | 🐕 | — |
| Redlees Park | 6.55 ha | | — |
| Raleigh Park | 6.31 ha | | — |
| Thornbury Playing Fields | 5.75 ha | | — |
| Blenheim Park | 5.72 ha | 🐕 | — |
| Cain's Lane Open Space | 5.66 ha | | — |
| Inwood Park | 5.1 ha | | — |
| Heston Park | 4.9 ha | | — |
| Glebelands Playing Fields Park | 4.75 ha | 🐕 | — |
| Bedfont Lakes Country Park | 4.27 ha | | — |
| Beaversfield Park | 3.89 ha | | — |
| Feltham Park | 3.67 ha | 🐕 | — |
| Isleworth Ait | 3.47 ha | | — |
| Grosvenor Park | 3.32 ha | 🐕 | — |
| Carville Hall Park North | 3.31 ha | | — |
| Chiswick Back Common | 3.22 ha | | — |
| Turnham Green | 3.17 ha | | — |
| Pevensey Road Nature Reserve | 3.05 ha | | — |
| Causeway | 2.99 ha | | — |
| Homefield Recreation Ground North | 2.66 ha | | — |
| Gunnersbury Triangle Local Nature Reserve London Wildlife Trust | 2.64 ha | | — |
| Bedfont lakes nature reserve. | 2.61 ha | | — |
| Chester Road Park | 2.6 ha | | — |
| St. John's Gardens | 2.3 ha | | — |
| Carville Hall Park South | 1.93 ha | | — |
| Waye Avenue Park | 1.92 ha | | — |
| Glebelands Open Space | 1.82 ha | | — |
| St. Paul's Recreation Ground | 1.68 ha | | — |
| Jersey Gardens | 1.6 ha | | — |
| Butts Farm Estate Park | 1.56 ha | | — |
| Jersey Gardens | 1.46 ha | | — |
| Clayponds Recreation Ground | 1.14 ha | | — |
| Watermans Park | 1.14 ha | | — |
| Fitzroy Gate | 1.11 ha | | — |
| Stamford Brook Common | 1.11 ha | | — |
| Silverhall Park | 1.09 ha | | — |
| Cultivate London @The Salopian Garden Cultivate London | — | | — |