Tracey Turner has written more than seventy books, most of them for children, on subjects including inventions, the universe, famous writers and deadly perils. For Macmillan, she is the author of The Curious Book of Lists , This is Our World and We Are All Different . As an editor, she commissioned and edited the Horrible Histories series. She lives in Bath, UK. Åsa Gilland is a Swedish illustrator who loves all things retro, quirky imagery, and folk art themes. She studied interior design at Accademia Italiana Moda and has twenty years of experience in illustration. She illustrated Macmillan's This is Our World and We Are All Different . Inclusion Ambassadors Overall consultant: Beth Cox is an Inclusion and Equality consultant, and founder of Inclusive Minds and Without Exception, who has many years' experience working with disabled children.

Syeda Mohshin has insight into ethnicity/culture/disability/nationality. She is a primary school teacher born in Bangladesh; she has children with dyslexia, hearing and vision impairment, and anxiety. Jo Ross-Barrett is autistic and non-binary, and has experience of anxiety and depression, and has helped with the autism spread and boys and girls spreads in particular. Ciara McDonagh is a fourteen-year-old girl who is visually impaired. She has an autistic brother who is also trans. Hannah A is of Pakistani/British heritage and has consulted on the cultural/ethnicity spreads. Hayley Goleniowska has helped especially with the spread on learning disabilities. Her daughter has Down's syndrome and she is an author and blogger on the subject of learning disability.

Rebecca Heyes is a dyslexia and dyscalculia specialist and also helped with the neurodiversity element of the book. Rachel Faturoti gave her insights into the spreads on ethnicity/race/culture as a British Nigerian woman. Jessica Chaikof works in diversity and disability in the USA as a disability advocate, and has personal experience of hearing and vision impairment.