Prince Charles discovers the stories behind the contenders for this year's award, who are judged on their success in marketing their products. He meets the professor who plans to revolutionise the way doctors diagnose disease; he watches a miniature infra-red camera guide firemen through smoke; and he discovers the Cambridge company hoping to make its mark with the giants of the Japanese computer industry. Other finalists include an injector that could put new life into power poles, a flexible wound dressing with sticking power, and a technique for preserving sensitive chemicals. Producer Martin Mortimore
Editor Dana Purvis