After the First World War many motorcycle makers assembled their machines from engines and other major components sourced from different manufacturers.
[2] Motors were sourced from JA Prestwich Industries Ltd (JAP), close ratio gearboxes from Burman, forks from Druid or Webb, chains from Renolds, oil pumps from Pilgrim, and carburettors from Binks.
In 1925 Davies rode his own motorcycles at the Isle of Man TT, coming second in the Junior and winning the Senior.
In September Bert le Vack set a speed record of 104.41 mph (168.03 km/h) on an HRD at Brooklands.
It was bought by Ernest Humphries (of OK Supreme Motors), who sold the name, tooling and patterns to Philip C Vincent for £450 in May, 1928.