Green Tomato Cars is an environmentally friendly service that's shaking up the age-old car hire industry.
In this video Goldstone explains how brand exposure helped to give Green Tomato Cars a fighting start and why he left his job as a hotshot city lawyer to risk it all by launching his first start-up.
He also reveals how he managed to attract high-profile clients such as BSkyB and Innocent Drinks in such a competitive industry and his tactics for building on the company's early success.
Find out more about Green Tomato Cars
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