 From October 2017 to January 2018, the Dulwich Picture Gallery held an exhibition of Jansson's paintings, illustrations, and cartoons.This was the first major retrospective exhibition of her work in the United Kingdom.With a new animated series, "Moominvalley"  to be broadcast in 2019, Rhianna Pratchett wrote an article about the impact Tove Jansson had had on her father Sir Terry Pratchett; he called Jansson one of the greatest children's writers there has ever been and credited her writing as one of the reasons he became an author.