The authors of Biff, Chip and Kipper are accused of slipping something rude in. Pugwash and Pooh have withstood similar blows. Let’s get to the bottom of this, writes Observer columnist Stephanie Merritt
Judith Kerr’s home hasn’t changed since she featured it in her classic children’s book. Here, she talks about her favourite furniture, her family, and why she’s still working at 93