Twenty years of magic and mayhem on Top Gear and The Grand Tour - from the mysterious man behind the camera . . .

Top Gear turned gloomy Sunday nights into celebratory Friday nights. It made household names of presenters Clarkson, Hammond and May, their unique chemistry and buddy movie antics proving irresistible to a global audience, earning them the Guinness World Record for the world's most popular factual TV show. Then, a short while later, it was gone. How did a thoroughly sensible little consumer advice programme on cars become a global phenomenon? How did it all go wrong? And how did they rise from the ashes as The Grand Tour? One man has all the answers - co-creator, and Jeremy's oldest friend, Andy Wilman.