| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | 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 | |
| Loughton – Burwarton Lane | England | Shropshire | Ludlow | footpath/road | Yes | Ancient 4m-5m, Ancient 5m-7m | View On Map |
| Loughton – churchyard | England | Shropshire | Ludlow | churchyard | Yes | Ancient 4m-5m, Ancient 7m+ | View On Map |
| Loughton Lane crossroads | England | Shropshire | Ludlow | footpath/road | Yes | Ancient 4m-5m | View On Map |
| Louvieres | France | Calvados - Normandie | Bayeux | churchyard | Yes | Notable | View On Map |
| Lovington | England | Somerset | Castle Cary | churchyard | Yes | Ancient 4m-5m | View On Map |
| Low Scawdel | England | Cumbria | Keswick | upland | Yes | Notable | View On Map |
| Lower Dowdeswell | England | Gloucestershire | churchyard | Yes | Ancient 4m-5m | View On Map |