| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Hardington Mandeville | England | Somerset | Yeovil | churchyard | Yes | Ancient 4m-5m | View On Map |
| Hardwick Hall | England | County Durham | Sedgefield | parkland | Yes | Notable | View On Map |
| Hardwick House – Mapledurham | England | Oxfordshire | Reading | woodland | Yes | Ancient 4m-5m | View On Map |
| Hare Warren – Wiltshire | England | Wiltshire | Salisbury | woodland | Yes | Notable | View On Map |
| Hare Warren Copse – Hampshire | England | Hampshire | Whitchurch | woodland | No | Ancient 5m-7m, Notable | View On Map |
| Harefield | England | Greater London | Uxbridge | churchyard | Yes | Ancient 7m+ | View On Map |
| Haremere Hall – Etchingham | England | Sussex - East | Battle | garden | No | Ancient 4m-5m | View On Map |
| Harewood Forest | England | Hampshire | Andover | woodland | No | Ancient 4m-5m, Ancient 7m+, Notable | View On Map |
| Harley | England | Shropshire | Much Wenlock | churchyard | Yes | Ancient 4m-5m | View On Map |
| Harley Down | England | Dorset | Blandford Forum | woodland | Yes | Notable | View On Map |
| Harlington | England | Greater London | Hounslow | churchyard | Yes | Ancient 5m-7m | View On Map |
| Harrietsham | England | Kent | Maidstone | churchyard | Yes | Ancient 5m-7m, Ancient 7m+, Notable | View On Map |
| Hartburn | England | Northumberland | Morpeth | former religious site | Yes | Lost, Notable | View On Map |
| Hartley Wintney | England | Hampshire | Farnborough | churchyard | Yes | Ancient 5m-7m | View On Map |
| Hartshead | England | Yorkshire - West | Huddersfield | churchyard | Yes | Lost | View On Map |
| Hartshorne | England | Derbyshire | Burton-on-Trent | churchyard | Yes | Notable | View On Map |
| Hartslock Wood SSSI | England | Oxfordshire | Reading | woodland | Yes | Notable | View On Map |
| Harvel | England | Kent | Gravesend | garden | No | Notable | View On Map |
| Hasbury | England | West Midlands | Halesowen | former religious site | No | Lost | View On Map |
| Haselor | England | Warwickshire | Alcester | churchyard | Yes | Ancient 5m-7m | View On Map |