He said that “time spent in her company was one of life’s great privileges and I am so grateful to have known her”.
Children’s author and TV personality David Walliams added: “I am so sad to hear that Judith Kerr has died.
“She was a legendary author and illustrator, whose stories and illustrations gave pleasure to millions around the world, not least me and my son. Judith is gone but her books will live on forever.”
Fellow writer Tony Parsons also added his voice.
Spandau Ballet’s Gary Kemp tweeted his gratitude for Kerr’s creations.
“Goodbye Judith Kerr,” he said, “All my four boys have adored you and I’ve loved reading your work to them. Forever on our bookshelves and in our imaginations.”
Kerr’s publisher at HarperCollins, Ann-Janine Murtagh, said it had been “the greatest honour and privilege to know and publish Judith Kerr for over a decade”, describing her as a person who “embraced life as one great big adventure and lived every day to the full”.