Built in Coventry, Warwickshire by Crouch Cars Ltd from 1912 to 1928.
Introduced as a three-wheeler powered by a 740cc, water-cooled Coventry-Simplex V-twin engine, it was named the Crouch Carette. A fourth wheel was added in 1913 and retained on all subsequent models, with engine size increased to 906cc, 994cc and then 1018cc. After WWI larger V-twin engines were fitted.
The Crouch V-twin was fitted to the C.M.C. Carrette by Swift.
Sources: 3-wheelers.com; Autopasion18.com