The Rootes group got a huge government handout to build the factory to build the Imp in Linwood, Paisley.I am not sure about Rootes Group (although please correct me) - I thought it was incorperated under Chrysler holdings who then ditched it under the 'Talbot' name to Peugeot - the last model being the Talbot Tagora ... what a monstrosity that was!
Of course I forgot about the Imp - I like the Imp, but never think of it as a 'Rootes Group' car in the same way as a Humber Hawk, Hillman Minx, Sunbeam Rapier, Hillman Hunter or (dare I say!) Chrysler 180
Also Rootes did toy with the idea (as they owned all the Names of the group, Hillman, Singer, Humber etc) of calling the Chrysler 180 the 'Humber' as in the group range Humber was always the most 'upmarket' model (This is even mentioned in the book the History of the Humber).
Rootes had quite a good 'ranking system/pecking order' for models in the 60's and 70's before using 'Chrysler name for everything:
Hillman = Standard
Singer = Slightly more trim
Sunbeam = Sporty
Humber = Luxury
Of course there were deviations - it was a Hillman Hunter with a tuned up Holbay engine which won the 1968 London to Sidney Rally!