| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Sunningwell | England | Oxfordshire | Abingdon | churchyard | Yes | Ancient 4m-5m | View On Map |
| Sunningwell – Yew Tree House | England | Oxfordshire | Oxford | garden | Yes | Notable | View On Map |
| Sutton | England | Sussex - West | Petworth | churchyard | Yes | Ancient 4m-5m | View On Map |
| Sutton at Hone | England | Kent | Dartford | churchyard | Yes | Notable | View On Map |
| Sutton Court – Tenbury Wells | England | Worcestershire | Tenbury Wells | garden | No | Lost | View On Map |
| Sutton Courtenay | England | Oxfordshire | Abingdon | churchyard | Yes | Notable | View On Map |
| Sutton Mandeville | England | Wiltshire | Shaftesbury | churchyard | Yes | Ancient 4m-5m | View On Map |
| Sutton Montis | England | Somerset | Castle Cary | churchyard | Yes | Notable | View On Map |
| Sutton Veny | England | Wiltshire | Warminster | churchyard | Yes | Ancient 4m-5m | View On Map |
| Swallowfield | England | Berkshire | Reading | churchyard | Yes | Ancient 4m-5m | View On Map |
| Swanscombe | England | Kent | Gravesend | churchyard | Yes | Notable | View On Map |
| Swansea High Street | Wales | Glamorgan | Swansea | churchyard | Yes | Lost | View On Map |
| Swarraton | England | Hampshire | Winchester | former religious site | No | Ancient 4m-5m | View On Map |
| Swaythling (South Stoneham) | England | Hampshire | Southampton | churchyard | Yes | Lost | View On Map |
| Swell | England | Somerset | garden | No | Lost, Notable | View On Map | |
| Swindon – Richard Jefferies garden | England | Wiltshire | Swindon | garden | Yes | Lost | View On Map |
| Swindon – Staffordshire | England | Staffordshire | Stourbridge | footpath/road | Yes | Ancient 5m-7m | View On Map |
| Swindon – The Lawns | England | Wiltshire | churchyard | No | Notable | View On Map | |
| Swiss Cottage – Cahir | Ireland | Co. Tipperary | Tipperary | garden | Yes | Notable | View On Map |
| Swlch Tump | Wales | Powys | Brecon | historic site | Yes | Lost | View On Map |