“Warner Bros. came to me ages ago and said they wanted to do something with Fantastic Beasts. I could see the potential in it. I knew something about Newt, having written a little something for Comic Relief. I had imagined a little bit of back…

“It all started when Warner Bros. came to me with the suggestion of turning ‘Fantastic Beasts and Where to Find Them’ into a film. I thought it was a fun idea, but the idea of seeing Newt Scamander, the supposed author of ‘Fantastic Beasts’, realised…