Matt Haig is an author for children and adults. His memoir Reasons to Stay Alive was a number one bestseller, staying in the British top ten for 46 weeks. His children's book A Boy Called Christmas was a runaway hit and has been translated into over 40 languages. It is being made into a film starring Maggie Smith, Sally Hawkins and Jim Broadbent and The Guardian called it an 'instant classic'. His novels for adults include the award-winning How To Stop Time, The Radleys, The Humans and the number one bestseller The Midnight Library.

He has sold over three million books worldwide.