Lacre
    1904-1952
    Lacre Motor Car Co Ltd
    Lontoo

Lambourn
    1937-1939
    Lambourn Garages, Lambourn, Berkshire ja
    Universal Power Drives Ltd, Perivale, Middlesen

Lancashire & Yorkshire Railway
    1901
    Lancashire & Yorkshire Railway Co

Lancashire Steam Motors
    1896-1907
    Lancashire Steam Motor Co
    Leyland, Lancashire

Lanchester
    1915

Landmaster
    1978-
    S Metherell Ltd
    St Denis, Cornwall

Land-Rover
    1962-
    Rover Co Ltd
    Solihull, West Midlands

Lane
    1900

Landbridge
    n. 1914

Latil (II)
    1932-1939, 1948-1955
    Shelvoke & Drewry Ltd
    Letchworth, Hertfordshire

Laycock
    1913-1915
    W S Laycock Ltd
    Millhouses, Sheffield

Layzell
    1900

Lewin
    n. 1930-n. 1963
    Lewin Road Sweepers
    Leeds, Yorkshire

Leyland (I)
    1907-
    Leyland Motors Ltd
    Leyland, Lancashire

Leyland-Dab/Saurer
    1973-1986
    British Leyland (UK) Ltd ja leyland DAB A/S (Tanska) ja Adolph Saurer AG (Sveitsi)

Leyland-GEC
    1935
    Leyland Motors Ltd
    Leyland, Lancashire

Leyland-MCW
    1948-1968
    Metropolitan-Cammel-Weymann Motor Bodies Ltd
    Birmingham

Leyland National
    1969-
    British Leyland Motor Corp Ltd
    Leyland, Lancashire

Leyland Redline
    1969-
    Leyland Motors (Scotland) Ltd
    Bathgate, West Lothian, Skotlanti

Leyland Scotstoun
    1972-n. 1979
    British Leyland Motor Corp Ltd
    Glasgow, Skotlanti

LGO
    1924
    London General Omnibus Co Ltd
    Lontoo

LGOC
    1909-1912, 1929
    London General Omnibus Co Ltd
    Lontoo

LIFU
    1897-1905
    Liquid Fuel Engineering Co Ltd
    East Cowes, Wight-saari

Liner
    1955-?

Lloyd & Plaister
    1905-1911
    Lloyd & Plaister Ltd
    Lontoo

Loco Traulier
    1932-1939
    Shelvoke & Drewry Ltd
    Letchworth, Hertfordshire

Locomo
    1910-1914
    Sir W G Armstrong, Whitworth & Co Ltd
    Newcastle-upon-Tyne

Locomotors
    1949
    Locomotor ltd
    Birkenhead, Cheshire

Lodemor
    1930-1937
    Laycock Eng Co Ltd
    Millhouses, Sheefield

Lomax
    1906
    John Goode
    Lontoo

Lomount
    1961-1962
    Lomount Vehicles & Engineering Ltd
    Colmbrook

Londonderry
    1903-n. 1908
    Londonderryn markiisin hiilikaivospaja
    Seaham Harbour, Durham

Lothian
    1913-1924
    Scottish Motor Traction Co Ltd
    Edinburg

Lotis
    1908-1912
    Sturmey Motors Ltd
    Coventry

Low-Deck
    1926-1927
    Corber & Heath Ltd
    Dartford, Kent

Low Loader
    1929-1934
    Low Loaders Ltd
    Lontoo

Lowdall
    1935-1936
    Trojan Ltd
    Croydon, Surrey

LVL
    1923-1926
    Light Vehicles Ltd
    Wolverhampton