| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Slaugham | England | Sussex - West | Horsham | churchyard | Yes | Ancient 7m+, Notable | View On Map |
| Slebech | Wales | Pembrokeshire | Haverfordwest | churchyard | Yes | Lost | View On Map |
| Slimbridge | England | Gloucestershire | Gloucester | garden | No | Ancient 5m-7m | View On Map |
| Slindon Bottom | England | Sussex - West | Chichester | woodland | Yes | Notable | View On Map |
| Smalley | England | Derbyshire | Derby | churchyard | Yes | Ancient 4m-5m | View On Map |
| Smisby | England | Derbyshire | Ashby de la Zouche | churchyard | Yes | Ancient 4m-5m | View On Map |
| Snave | England | Kent | Ashford | churchyard | Yes | Lost | View On Map |
| Snead | England | Shropshire | Bishop's Castle | churchyard | Yes | Notable | View On Map |
| Snelston | England | Derbyshire | Ashbourne | churchyard | Yes | Notable | View On Map |
| Snitterfield | England | Warwickshire | Stratford-upon-Avon | churchyard | Yes | Lost | View On Map |
| Snodhill Castle | England | Herefordshire | Hay-on-Wye | historic site | Yes | Ancient 4m-5m, Lost, Notable | View On Map |
| Soberton | England | Hampshire | Portsmouth | churchyard | Yes | Lost | View On Map |
| Soberton – Selworth Lane | England | Hampshire | Portsmouth | footpath/road | Yes | Ancient 4m-5m | View On Map |
| Soberton Heath – Russells Farm | England | Hampshire | Portsmouth | garden | No | Ancient 4m-5m | View On Map |
| Sodington Hall | England | Worcestershire | Cleobury Mortimer | garden | No | Ancient 4m-5m | View On Map |
| Solihull | England | West Midlands | Birmingham | garden | Yes | Notable | View On Map |
| Somersal Herbert | England | Derbyshire | Uttoxeter | churchyard | Yes | Lost | View On Map |
| Sortosville | France | Manche - Normandie | Valonges | churchyard | Yes | Ancient 5m-7m | View On Map |
| South Bersted | England | Sussex - West | Bognor Regis | churchyard | Yes | Lost | View On Map |
| South Brewham | England | Somerset | Wincanton | churchyard | Yes | Ancient 4m-5m | View On Map |