| Site name | Country | County | Nearest town | Site type | Access | Classification (girth in metres) | 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 | |
| Lower Gravenhurst | England | Bedfordshire | Luton | churchyard | Yes | Lost | View On Map |
| Lower Hardres | England | Kent | Canterbury | churchyard | Yes | Lost | View On Map |
| Lower Machen | Wales | Monmouthshire | Newport | churchyard | Yes | Ancient 4m-5m, Ancient 5m-7m, Notable | View On Map |
| Lower Soudley | England | Gloucestershire | Cinderford | woodland | Yes | Notable | View On Map |
| Lowther Castle | England | Cumbria | Penrith | garden | Yes | Notable | View On Map |
| Loxton | England | Somerset | Weston-super-Mare | churchyard | Yes | Notable | View On Map |
| Luddesdown | England | Kent | Rochester | woodland | No | Notable | View On Map |
| Ludford | England | Shropshire | Ludlow | churchyard | Yes | Ancient 5m-7m | View On Map |
| Lullingstone | England | Kent | Swanley | churchyard | No | Lost | View On Map |