Par ordre de publication.
- The White Sea Horse (1964)
- Pietro and the Mule (1965)
- Where the Wind Blows (1966)
- The Signposters (1968)
- The Sea Piper (1968)
- At the Stroke of Midnight (1971)
- Up the Pier (1972)
- The Beachcombers (1972)
- The Bongleweed (1973)
- Cheap Day Return (1974)
- White Sea Horse and Other Sea Magic (1975)
- The Winter of the Birds (1976)
- A Game of Catch (1977) (avec Ati Forberg)
- My Aunt Polly (1979)
- The Piemakers (1980) (avec Judith Gwyn Brown)
- Dear Shrink (1982)
- The Night Watchmen (1983) (avec Gareth Floyd)
- The Secret World of Polly Flint (1984)
- Moondial (1987) adapté à la télévision et diffusé en France sous le nom de "Le Mystère du cadran lunaire"
- Ellie and the Hagwitch (1987)
- Dragon Ride (1987)
- Trouble (1988)
- Time Out (1990) (avec Peter Elwell)
- Weather Cat (1990)
- The Return of the Psammead (1992) une suite de E. Nesbit's Five Children and It qu'elle a adapté à la télévision.
- Almost Goodbye, Guzzler (1992) (avec Judy Brown)
- The Watchers: A Mystery At Alton Towers (1993)
- Classic Fairy Tales (1994) (une adaptation de contes traditionnels)
- Stonestruck (1996)
- Sophie and the Sea Wolf (1997)
- The Little Sea Pony (1997 )
- The Little Sea Horse (1998)
- The Little Grey Donkey (1999)
- Mystery Stories (2003)
- Rumpelstiltskin (2004) (une adaptation de contes traditionnels)
- Lizzie Dripping (1973)
- Lizzie Dripping by the Sea (1974)
- Lizzie Dripping and the Little Angel (1974)
- Lizzie Dripping and the Witch (1974)
- Lizzie Dripping on Holiday (1994)
- Meet Posy Bates (1992)
- Posy Bates and the Bag Lady (1994)
- Posy Bates, Again! (1994)
- A Gift from Winklesea (1997)
- Whatever Happened in Winklesea? (1991)
- Mystery at Winklesea (1995)
- Ordinary Jack (1977)
- Absolute Zero (1978)
- Bagthorpes Unlimited (1978)
- Bagthorpes v The World (1979)
- Bagthorpes Abroad (1984)
- Bagthorpes Haunted (1985)
- Bagthorpes Liberated (1989)
- The Bagthorpe Triangle (1992)
- Bagthorpes Besieged (1997)
- Bagthorpes Battered (2001)
