After Swallow Sidecars achieved the SS100 and became SS Cars Ltd (and eventually Jaguar Cars), the sidecar operation was set up as Swallow Coachbuilding and eventually came to be owned by the Tube Investments Group. In 1954 an attempt was made to create a sports car above the Triumph TR2 and beneath the more expensive Jaguar XK120. Frank Rainbow designed the Doretti built on steel tubes and using Triumph TR2 mechanics. The name 'Doretti' may come from Dorothy Deen who was involved in a brand 'Doretti' selling luggage and accessories, and her father Arthur Andersen met Eric Sanders of Tube Investments and discussed creating a new sports car. Launched in 1953, the Doretti was effectively killed off in 1955 possibly because Tube Investments sold many components to Jaguar and Triumph who may have worried about competition from the Doretti.