| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Stoughton Down | England | Sussex - West | Chichester | woodland | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Stourhead | England | Wiltshire | Wincanton | estate | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Stourton Caundle | England | Dorset | Sherborne | churchyard | Yes | Ancient 4m-5m | View On Map |
| Stow-on-the-Wold | England | Gloucestershire | Cheltenham | churchyard | Yes | Notable | View On Map |
| Stowe – Birds Holding | England | Shropshire | Knighton | footpath/road | Yes | Ancient 5m-7m | View On Map |
| Stowe – Gloucestershire | England | Gloucestershire | Monmouth | former religious site | No | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Stowe – Shropshire | England | Shropshire | Knighton | churchyard | Yes | Ancient 5m-7m | View On Map |
| Stowe landscaped gardens | England | Buckinghamshire | Buckingham | estate | Yes | Ancient 4m-5m, Notable | View On Map |
| Stowey | England | Somerset | Midsomer Norton | churchyard | Yes | Ancient 4m-5m | View On Map |
| Stowting | England | Kent | Folkestone | churchyard | Yes | Ancient 5m-7m, Ancient 7m+ | View On Map |
| Straits Copse Mottisfont | England | Hampshire | Stockbridge | woodland | No | Ancient 4m-5m | View On Map |
| Strata Florida | Wales | Ceredigion | Aberystwyth | churchyard | Yes | Ancient 5m-7m, Lost, Notable | View On Map |
| Stratfield Saye | England | Hampshire | Tadley/Reading | parkland | Yes | Ancient 5m-7m | View On Map |
| Stratton Park | England | Hampshire | Winchester | parkland | No | Notable | View On Map |
| Stretton en le Field | England | Leicestershire | Tamworth | churchyard | Yes | Ancient 4m-5m | View On Map |
| Strichen House | Scotland | Aberdeenshire | Fraserburgh | garden | No | Notable | View On Map |
| Stroat | England | Gloucestershire | Chepstow | woodland | No | Ancient 5m-7m | View On Map |
| Strouds Wood | England | Hampshire | Romsey | woodland | No | Ancient 5m-7m, Notable | View On Map |
| Stubbings House – Maidenhead | England | Berkshire | Maidenhead | garden | Yes | Ancient 4m-5m | View On Map |
| Stuc an t – lobairt | Scotland | Argyll and Bute | Tarbet | historic site | No | Ancient 5m-7m | View On Map |