Iden
    1905-1907
    Iden Motor Car Co Ltd
    Parkside, Coventry

IML
    1925-?
    Metropolitan Motors
    Lontoo

Independent (III)
    1980-
    Independent Coachways (Leeds) Ltd
    Horsford, Leeds

Iris
    1905-1910, 1919
    Legros & Knowles Ltd
    Lontoo

International (IV)
    1965-1969
    International Harvester Co of Greaat Britain Ltd
    Doncaster, Yorkshire