| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Harlestone | England | Northamptonshire | Northampton | footpath/road | Yes | Ancient 5m-7m | View On Map |
| Harewood Forest | England | Hampshire | Andover | woodland | No | Ancient 4m-5m, Ancient 7m+, Notable | View On Map |
| Haremere Hall – Etchingham | England | Sussex - East | Battle | garden | No | Ancient 4m-5m | View On Map |
| Harefield – woodland | England | Greater London | London | woodland | Yes | Notable | View On Map |
| Harefield | England | Greater London | Uxbridge | churchyard | Yes | Ancient 7m+ | View On Map |
| Hare Warren Copse – Hampshire | England | Hampshire | Whitchurch | woodland | No | Ancient 5m-7m, Notable | View On Map |
| Hare Warren – Wiltshire | England | Wiltshire | Salisbury | woodland | Yes | Notable | View On Map |
| Hardwick House – Mapledurham | England | Oxfordshire | Reading | woodland | Yes | Ancient 4m-5m | View On Map |
| Hardwick Hall | England | County Durham | Sedgefield | parkland | Yes | Notable | View On Map |
| Hardington Mandeville | England | Somerset | Yeovil | churchyard | Yes | Ancient 4m-5m | View On Map |
| Hardings Booth | England | Staffordshire | Buxton | footpath/road | No | Notable | View On Map |
| Hardham | England | Sussex - West | Petworth | churchyard | Yes | Lost | View On Map |
| Hard Knott (Eskdale) | England | Cumbria | Broughton in Furness | upland | Yes | Ancient 4m-5m | View On Map |
| Harbridge | England | Hampshire | Ringwood | churchyard | Yes | Ancient 5m-7m | View On Map |
| Harbledown | England | Kent | Canterbury | churchyard | Yes | V - con | View On Map |
| Harberton | England | Devon | Torquay | churchyard | Yes | Ancient 4m-5m | View On Map |
| Hanworth | England | Greater London | London | churchyard | Yes | Notable | View On Map |
| Hanter Hill | Wales | Powys | Gladestry | field | No | Lost | View On Map |
| Hannington – 2 | England | Hampshire | Basingstoke | woodland | No | Notable | View On Map |
| Hannington – 1 | England | Hampshire | Basingstoke | footpath/road | No | Ancient 5m-7m | View On Map |