| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Penrhiwceiber | Wales | Glamorgan | Pontypridd | historic site | Yes | Ancient 5m-7m | View On Map |
| Penrhos – Monmouthshire | Wales | Monmouthshire | Monmouth | churchyard | Yes | Ancient 5m-7m, Lost | View On Map |
| Penrhos – Powys | Wales | Powys | Welshpool | churchyard | Yes | Ancient 4m-5m | View On Map |
| Penrhyn-coch | Wales | Ceredigion | Aberystwyth | garden | No | Lost | View On Map |
| Penryn | England | Cornwall | Falmouth | churchyard | Yes | Ancient 4m-5m | View On Map |
| Pensax | England | Worcestershire | Stourport-on-Severn | churchyard | Yes | Ancient 5m-7m | View On Map |
| Penselwood | England | Somerset | Wincanton | footpath/road | Yes | Notable | View On Map |
| Penstrowed | Wales | Powys | Newtown | churchyard | Yes | Lost | View On Map |
| Penterry | Wales | Monmouthshire | Chepstow | churchyard | Yes | Notable | View On Map |
| Penton Mewsey | England | Hampshire | Andover | churchyard | Yes | Notable | View On Map |
| Penty Parc | Wales | Pembrokeshire | Haverfordwest | garden | No | Notable | View On Map |
| Pentyrch | Wales | Cardiff | Cardiff | churchyard | Yes | Ancient 5m-7m, Lost | View On Map |
| Penymynydd | Wales | Bridgend | Bridgend | churchyard | Yes | Ancient 5m-7m | View On Map |
| Peper Harow | England | Surrey | Godalming | churchyard | Yes | Ancient 7m+ | View On Map |
| Peruena | Spain | Asturias | Quiros Valley | churchyard | Yes | Notable | View On Map |
| Peterchurch | England | Herefordshire | Hereford | churchyard | Yes | Ancient 7m+ | View On Map |
| Peterchurch – Hinton Court | England | Herefordshire | Hereford | footpath/road | Yes | Lost, Notable | View On Map |
| Peterston-super-Ely | Wales | Glamorgan | Cardiff | churchyard | Yes | Ancient 4m-5m | View On Map |
| Peterstow | England | Herefordshire | Ross-on-Wye | churchyard | Yes | Ancient 5m-7m | View On Map |
| Petham | England | Kent | Canterbury | churchyard | Yes | Ancient 4m-5m, Ancient 7m+ | View On Map |