He co-founded Coburn Improvements, a company that custom modified sports and racing cars. He then made improvements to a Mini 850 S, which he raced for several seasons. In 1967, he participated in 23 races, of which he won 16 and placed in the rest. After that successful season, he decided to sell his car: it realised about £650 – a small fortune at the time. Vereker worked briefly for Downton Engineering and Janspeed but lost interest in cars. Pursuing his interest in reproduction of sound with 8 mm film, Vereker found that prices were high due to a dearth of supply, and built a machine to perforate recording tape capable of making 6 million feet a year.