| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | View on map |
|---|---|---|---|---|---|---|---|
| Long Sutton | England | Hampshire | Farnham | churchyard | Yes | Ancient 5m-7m, Ancient 7m+ | View On Map |
| Longbridge Deverill | England | Wiltshire | Warminster | churchyard | Yes | Ancient 7m+ | View On Map |
| Longhope | England | Gloucestershire | Gloucester | churchyard | Yes | Notable | View On Map |
| Longleat | England | Wiltshire | Warminster | garden | No | Ancient 7m+ | View On Map |
| Longney | England | Gloucestershire | Gloucester | churchyard | Yes | Ancient 4m-5m | View On Map |
| Longnor | England | Staffordshire | Buxton | churchyard | Yes | Ancient 4m-5m | View On Map |
| Longparish | England | Hampshire | Whitchurch | footpath/road | No | Ancient 4m-5m | View On Map |
| Longraigue | Ireland | Co. Wexford | Wexford | footpath/road | No | Ancient 4m-5m | View On Map |
| Longstock Park near Stockbridge | England | Hampshire | Stockbridge | estate | Yes | Ancient 5m-7m | View On Map |
| Longueville | France | Calvados - Normandie | Carentin | churchyard | Yes | Ancient 4m-5m | View On Map |
| Longvillers | France | Calvados - Normandie | Villers-Bocage | churchyard | Yes | Notable | View On Map |
| Longwood – garden | England | Hampshire | Winchester | garden | Yes | Notable | View On Map |
| Longwood 1 | England | Hampshire | Winchester | woodland | No | Ancient 4m-5m, Lost | View On Map |
| Longwood 2 | England | Hampshire | Winchester | woodland | Yes | Ancient 4m-5m | View On Map |
| Loose | England | Kent | Maidstone | churchyard | Yes | Ancient 7m+ | View On Map |
| Lorton Vale | England | Cumbria | Cockermouth | field | Yes | Ancient 4m-5m | View On Map |
| Loudoun – Big Wood | Scotland | Ayrshire | Galston | woodland | Yes | Ancient 4m-5m | View On Map |
| Loudoun Castle – Galston | Scotland | Ayrshire | Kilmarnock | castle | Yes | Ancient 4m-5m | View On Map |
| Loughcrew Gardens | Ireland | Co. Meath | Oldcastle | garden | Yes | Ancient 4m-5m | View On Map |
| Loughgaul Agricultural Institute | Ireland | Co. Armagh | Armagh | Yes | Notable | View On Map |