| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Highclere Castle | England | Hampshire | Newbury | former religious site | Yes | Ancient 7m+ | View On Map |
| Highnam Woods – nr Gloucester | England | Gloucestershire | Gloucester | woodland | No | Ancient 5m-7m | View On Map |
| Hillier – Sir Harold Hillier Gardens | England | Hampshire | Winchester | boundary | Yes | Notable | View On Map |
| Hillingdon | England | Greater London | London | churchyard | Yes | Lost, V - con | View On Map |
| Hilton Park – Scotstown | Ireland | Co. Monaghan | Monaghan | estate | No | Ancient 5m-7m | View On Map |
| Himley Hall | England | Staffordshire | Dudley | parkland | Yes | Ancient 4m-5m, Ancient 7m+ | View On Map |
| Hindhead | England | Surrey | Haselmere | woodland | Yes | Ancient 4m-5m | View On Map |
| Hinton Blewett | England | Somerset | Midsomer Norton | churchyard | Yes | Lost | View On Map |
| Hinton St George | England | Somerset | Crewkerne | churchyard | Yes | Ancient 4m-5m | View On Map |
| Hirnant | Wales | Powys | Bala | churchyard | Yes | Ancient 4m-5m | View On Map |
| Hittesleigh Barton | England | Devon | Okehampton | churchyard | Yes | Lost | View On Map |
| Hockerton | England | Nottinghamshire | Newark-on-Trent | churchyard | Yes | Ancient 5m-7m | View On Map |
| Hoe Cross -near | England | Hampshire | Waterlooville | boundary | No | Ancient 7m+ | View On Map |
| Holcombe Old Church | England | Somerset | Midsomer Norton | churchyard | Yes | V - con | View On Map |
| Holdgate | England | Shropshire | Much Wenlock | churchyard | Yes | Notable | View On Map |
| Holford | England | Somerset | Williton | churchyard | Yes | Ancient 4m-5m, Notable | View On Map |
| Hollingbourne | England | Kent | Maidstone | churchyard | Yes | Notable | View On Map |
| Hollybank Woods – Emsworth | England | Hampshire | Havant | woodland | Yes | Ancient 4m-5m | View On Map |
| Hollycombe | England | Sussex - West | Haslemere | woodland | No | Ancient 7m+ | View On Map |
| Hollycombe – Hirtwell Cottage | England | Sussex - West | Haslemere | garden | No | Ancient 4m-5m | View On Map |