Who green-lit The Masked Singer, or dreamed up a dating show about Prince Harry? Insiders reveal how madcap ideas go from page to small-screen sensation

Nine years ago, TV developer Park Won Woo was taking a break in a car park after shooting auditions for a South Korean talent show. He had worked on number of similar programmes throughout his career, but had come to feel uneasy about their format. “They’re not always fair,” he recalls thinking, because on numerous occasions, people seemed to win because of their looks, not their talent. A solution popped into his head: what if the singers wore masks?

For three years, nobody wanted Park’s show, the idea for which evolved to feature celebrities behind the masks. The 48-year-old had 24 years’ experience in the TV industry, but his idea was rejected by network after network. “I felt sheer desperation,” he tells me.