 Beacon Motor Services of Crowborough was fully acquired in 1954 (although it had been controlled by Southdown since 1949).The company also controlled three services operated by Sargents of East Grinstead although these passed to M&D in 1951.In 1957 Southdown also entered into the Heathfield Pool agreement (also known as the Heathfield Cycle) with M&D by which all services through Heathfield became joint operations.