| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Rendcomb Park | England | Gloucestershire | Cirencester | woodland | No | Ancient 4m-5m | View On Map |
| Repentigny | France | Calvados - Normandie | Lisieux | churchyard | Yes | Ancient 5m-7m | View On Map |
| Reviers | France | Calvados - Normandie | Caen | churchyard | Yes | Ancient 4m-5m | View On Map |
| Rewell Wood – Sussex | England | Sussex - West | Arundel | woodland | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Reydon Hall | England | Norfolk | Norwich | garden | No | Notable | View On Map |
| Rhulen | Wales | Powys | Builth Wells | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m, Ancient 7m+Lost | View On Map |
| Rhydycroesau | England | Shropshire | Oswestry | woodland | Yes | Notable | View On Map |
| Ribbesford | England | Worcestershire | Kidderminster | churchyard | Yes | Notable | View On Map |
| Riber – Low Leas Farm | England | Derbyshire | Matlock | garden | No | Ancient 5m-7m | View On Map |
| Richards Castle – All Saints | England | Shropshire | Ludlow | churchyard | Yes | Ancient 4m-5m | View On Map |
| Richards Castle Hill Fort | England | Herefordshire | Ludlow | castle | Yes | Ancient 4m-5m, Notable | View On Map |
| Richmond | England | Greater London | London | No | Lost | View On Map | |
| Rickmansworth | England | Hertfordshire | Watford | churchyard | Yes | Lost | View On Map |
| Riddell | Scotland | Scottish Borders | Selkirk | woodland | Yes | Ancient 4m-5m | View On Map |
| Riddlesdown SSSI | England | Surrey | Croydon | woodland | Yes | Notable | View On Map |
| Ridlington | England | Rutland | Leicester | garden | No | Ancient 5m-7m | View On Map |
| Rimpton | England | Somerset | Sherborne | churchyard | Yes | Ancient 4m-5m | View On Map |
| Ringmore | England | Devon | Kingsbridge | churchyard | Yes | Ancient 4m-5m | View On Map |
| Ringwould | England | Kent | Deal | churchyard | Yes | Ancient 5m-7m, Ancient 7m+ | View On Map |
| Ripple | England | Kent | Deal | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |