Lade Fort
Lammerside
Lamphey Bishops Palace
Lancaster
Lanercost
Langley
Lasborough
Laugharne
Launceston
Lavendon
Laxton
Layer Marney Tower
Leeds
Leicester
Leigh
Levens Hall
Lewes
Leybourne
Leysters
Lidgate
Lilbourne
Lincoln Castle (Lindum Fort)
Lindisfarne
Lingen
Little Hereford
Little Swinburne Tower
Little Wenham Hall
Llanblethian (St Quentins)
Llancillo
Llandaff Bishops Palace
Llandovery
Llanddew
Llanegwad
Llanfor
Llangattock Vibon Avei
Llangybi
Llanstephan
Llanvaches
Llanvair Discoed
Llawhaden
Lleiniog
Llysun Motte
Longthorpe Tower
Longtown
Loughor Castle (Leucarum Fort)
Low Borrowbridge Fort
Lower Down
Lowick Hall
Lowther
Ludgershall
Ludlow
Luggy Motte
Lullingstone
Lulworth
Lumley
Lydford
Lympne
Lyonshall
