| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Abamia | Spain | Asturias | Cangas de Onis | churchyard | Yes | Ancient 4m-5m | View On Map |
| Abbaye de Fontaine – Guerard | France | Eure - Normandie | Rouen | former religious site | Yes | No Map Data | |
| Abberley Hill | England | Worcestershire | Worcester | woodland | Yes | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| Abbey Dore | England | Herefordshire | Hereford | churchyard | Yes | Ancient 4m-5m | View On Map |
| Abbeycwmhir | Wales | Powys | Rhayader | churchyard | Yes | Ancient 5m-7m | View On Map |
| Abbeytown | England | Cumbria | Wigton | garden | No | Notable | View On Map |
| Abbots Leigh | England | Somerset | Bristol | churchyard | Yes | Ancient 7m+ | View On Map |
| Abbotstone Down | England | Hampshire | Winchester | woodland | No | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| Abbotstone Down – Northfield Plantation | England | Hampshire | Winchester | woodland | No | Ancient 4m-5m | View On Map |
| Abbotstone Down – Sheep Wood | England | Hampshire | Winchester | woodland | No | Notable | View On Map |
| Abenhall | England | Gloucestershire | Cinderford | churchyard | Yes | Ancient 4m-5m, Lost | View On Map |
| Aberbranddu | Wales | Carmarthenshire | Llandovery | footpath/road | Yes | Ancient 5m-7m | View On Map |
| Abercorn | Scotland | West Lothian | Edinburgh | historic site | Yes | Notable | View On Map |
| Aberedw | Wales | Powys | Builth Wells | churchyard | Yes | Ancient 5m-7m | View On Map |
| Aberglasney | Wales | Carmarthenshire | Llandeilo | historic site | Yes | Notable | View On Map |
| Abergwesyn – Llanddewi | Wales | Powys | Builth Wells | churchyard | Yes | Ancient 5m-7m, Notable | View On Map |
| Abergwesyn – Llanfihangel | Wales | Powys | Builth Wells | churchyard | Yes | Ancient 5m-7m, Notable | View On Map |
| Abergwili | Wales | Carmarthenshire | Carmarthen | churchyard | Yes | Ancient 5m-7m, Lost | View On Map |
| Abergwyngregyn (Aber) | Wales | Gwynedd | Bangor | churchyard | Yes | Ancient 5m-7m, Notable | View On Map |
| Aberhafesp | Wales | Powys | Newtown | churchyard | Yes | Ancient 5m-7m | View On Map |