| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Burwash | England | Sussex - East | Heathfield | estate | Yes | Ancient 4m-5m | View On Map |
| Bury | England | Sussex - West | Arundel | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Bury Manor Castle – Wick | England | Gloucestershire | Bristol | garden | No | Notable | View On Map |
| Bury St Edmunds – Abbey Gardens | England | Suffolk | Bury St Edmunds | garden | Yes | Notable | View On Map |
| Bushy Down Farm – nr Droxford | England | Hampshire | Portsmouth | hedge | Yes | Ancient 5m-7m | View On Map |
| Butcombe | England | Somerset | Bristol | churchyard | Yes | Ancient 4m-5m | View On Map |
| Butser Hill / Oxenbourne Down | England | Hampshire | Petersfield | woodland | Yes | Notable | View On Map |
| Buttermere | England | Cumbria | Keswick | upland | Yes | Ancient 4m-5m | View On Map |
| Buttington | Wales | Powys | Welshpool | churchyard | Yes | Ancient 7m+ | View On Map |
| Buxted | England | Sussex - East | Uckfield | churchyard | Yes | Ancient 7m+ | View On Map |
| Bwlch-llan – formerly Nantcwnlle | Wales | Ceredigion | Lampeter | churchyard | Yes | Lost | View On Map |
| Bwlchgwyn | Wales | Flintshire | Wrexham | woodland | Yes | Ancient 4m-5m | View On Map |
| Byford | England | Herefordshire | Hereford | churchyard | Yes | Ancient 4m-5m | View On Map |
| Byton | England | Herefordshire | Kington | churchyard | Yes | Ancient 4m-5m | View On Map |
| Byton – Pipe Trow Farm | England | Herefordshire | Kington | estate | No | Ancient 4m-5m | View On Map |
| Caddington | England | Bedfordshire | Luton | churchyard | Yes | Ancient 4m-5m | View On Map |
| Cae Ffynnon | Wales | Conwy | Llanfairfechan | historic site | No | Lost | View On Map |
| Caer Alyn | Wales | Wrexham | Gresford | historic site | Yes | Notable | View On Map |
| Caerau | Wales | Glamorgan | Cardiff | churchyard | Yes | Lost | View On Map |
| Caerhun | Wales | Conwy | Bangor | churchyard | Yes | Ancient 5m-7m | View On Map |