In 1938 with just 2 cars George Thomas Cox began Streamline. By the end of the World War II the family run business had grown to ten vehicles. Surplus vehicles at this time were being released by the armed services and George purchased a twenty seat charabanc from the Royal Air Force. It was still painted in ‘war grey’ and the Streamline staff set to work to repaint in the chosen colour, yellow. The charabanc soon became known as the ‘Yellow Peril’.

The first new coach was bought in 1946 a 29 seat and used for day trips to Margate, Ramsgate and Southend. In 1954 Streamline became a limited company with George Thomas Cox and his wife Hette Laura Cox being directors and their son Norman a shareholder. The business continued to grow and in 1966 Norman Cox took over Kentish Belle coaches of Bearsted bringing the fleet to 25 vehicles.

From 1st July 2004 the major part of the coaching operation currently carried out by Streamline (Maidstone) Ltd was transferred to Streamline (West Malling) Ltd T/A which continues to be very much a family run business under the guidance of Jayne Corcoran as managing director.