[12] The following August 1933 Karrier tardily announced that under difficult trading conditions they had made a substantial loss during that 1932 calendar year.

[13] At the beginning of June 1934 Karrier was put into receivership though it was also announced that business would continue while "negotiations" were completed.

Dodge Brothers, then a leading builder of light trucks in USA, in 1922 began to bring knocked-down kits for assembly in Park Royal, London.

Dodge (some vehicles badged Fargo or De Soto) truck production was merged with Commer and Karrier at Dunstable in 1965.

One characteristic of the early Karrier trucks was their preference to have the engine under the footboards, thereby giving a larger proportion of the length of the vehicle over to the load bed.

[19] In 1913 Clayton built a truck according to WD guidelines and were successful in getting it certified under the War Office Subsidy Scheme.

[22] At the 1920 October Commercial vehicle show at Olympia they had their 4 and 5 ton goods models plus a road sweeper and the Karrier "Superb" char-à-banc on display.

[23] At the 1921 show they added a three-way tipper truck, and offered their other chassis models with the driver moved forward partly alongside the engine, allowing 2 foot more load bed/passenger space.

Described by newspapers, quoting Karrier, in 1930[27] as a "mechanical horse" the small "Cob" tractor was designed by J Shearman, road motor engineer for London, Midland and Scottish Railway.

[28] Production tractors powered by Jowett engines were displayed on the Karrier stand at Olympia's Motor Transport Show.

Also designed by J Shearman, road motor engineer to London, Midland and Scottish Railway it was tested by the chairman and board of directors of LM & S in January 1931 by travelling between Redbourn and Hemel Hempstead.

Despite receiving multiple orders in 1933–4, Karrier went into receivership, leading to the takeover by Humber in 1934, thus becoming part of the Rootes Group.

[34] Trolleybus manufacture was moved to Rootes's Sunbeam subsidiary's factory at Wolverhampton, where it continued up until World War II.

[35] In the late 1950s and 1960s some Karrier vehicles were fitted with the Rootes TS3 two-stroke opposed piston diesel engine.