Richard Garrett & Sons this company was active under original ownership between 1778 - 1932 then the company joined Agricultural & General Engineers (AGE) combine in 1919. The combine entered receivership in 1932 then was purchased by Beyer Peacock in 1932 then continued trading as Richard Garrett Engineering Works until it finally closed in 1981.

Garrett & Sons produced Portable engines, Traction engines which 49% of which were exported, Steam rollers, Steam tractors, Steam Wagons.

The company produced steam wagons of both the undertype and overtype configurations. Their first steam wagons were three relatively unsuccessful undertypes constructed between 1904 and 1908.

The failed undertype wagons were followed by a relatively successful line of overtypes, the first being constructed in 1909. These wagons were developed using the experience Garrett's designers had gained producing the tractors. The majority of these wagons were fitted with superheaters, a feature used as a marketing point against the un-superheated Foden wagons. The overtype wagons were initially produced in a 5-ton capacity, with a 3-ton design following in 1911. By the early 1920s, the overtype wagon market was declining in the face of competition from undertype steam wagons and petrol wagons. In 1926 a last-ditch attempt was made to produce an updated design of 6-ton capacity using components from the new undertype designs, but only 8 were produced. Overall, 693 overtypes were produced to the firm's designs.

The final Aveling & Porter overtype wagons were assembled by Garrett, under the arrangements made at the formation of AGE.

By 1920 the success of the Sentinel undertypes was evident, and Garretts decided to re-enter the undertype wagon market. Their first prototype was produced in 1921, driven by a two-cylinder engine with piston valves actuated by Joy valve gear. Unusually for the time, the wagon was fitted with Timken roller bearings on the crankshaft, countershaft and axles. This design was built under license as the "Adamov-Garrett" by Adamov of Czechoslovakia from 1925. In 1926 a prototype rigid six-wheeled wagon was produced. In 1927 a poppet valve engine replaced the earlier design, this being used until the end of production in 1932. 310 wagons were produced in this second phase of undertype construction.