| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Clayhidon | England | Devon | Wellington | churchyard | Yes | Ancient 4m-5m | View On Map |
| Clayton Manor Gardens | England | Sussex - West | Brighton | garden | No | Ancient 5m-7m | View On Map |
| Clearbury Down | England | Wiltshire | Salisbury | field | Yes | Ancient 4m-5m | View On Map |
| Clee St Margaret | England | Shropshire | Ludlow | churchyard | Yes | Ancient 4m-5m | View On Map |
| Cleeve Prior | England | Worcestershire | Evesham | churchyard | Yes | Notable | View On Map |
| Cleeve Prior Manor | England | Worcestershire | Evesham | garden | No | Notable | No Map Data |
| Clehonger | England | Herefordshire | Hereford | churchyard | Yes | Lost, Notable | View On Map |
| Cleobury North | England | Shropshire | Bridgnorth | churchyard | Yes | Notable | View On Map |
| Clevedon | England | Somerset | Bristol | footpath/road | Yes | Notable | View On Map |
| Cliffe Pypard | England | Wiltshire | Swindon | churchyard | Yes | Ancient 5m-7m | View On Map |
| Clifford | England | Herefordshire | Hay-on-Wye | churchyard | Yes | Lost, Notable | View On Map |
| Clifton on Teme | England | Worcestershire | Worcester | churchyard | Yes | Ancient 5m-7m | View On Map |
| Climping | England | Sussex - West | Littlehampton | churchyard | Yes | Notable | View On Map |
| Clints Scar | England | Yorkshire - North | Richmond | upland | Yes | Ancient 4m-5m, Ancient 5m-7m, LostNotable | View On Map |
| Clipsham | England | Rutland | Stamford | estate | Yes | Notable | View On Map |
| Clocaenog | Wales | Denbighshire | Ruthin | churchyard | Yes | Ancient 5m-7m | View On Map |
| Clodock | England | Herefordshire | Abergavenny | garden | No | Notable | View On Map |
| Cloncaird Castle | Scotland | Ayrshire | Ayr | castle | No | Ancient 4m-5m | View On Map |
| Clonfert | Ireland | Co. Galway | Dublin | churchyard | Yes | Notable | View On Map |
| Clonmannon | Ireland | Co. Waterford | Wicklow | estate | No | Ancient 4m-5m | No Map Data |