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| S | Book and author | Other notes |
| Sabira | Frostfire by Jamie Smith | |
| Sadie | This is Sadie by Sara O’Leary | |
| Saffron | The Fancy Dress Party by Janey Louise Jones | S |
| Salazar | Harry Potter books by J. K. Rowling | S |
| Salim | The London Eye Mystery by Siobhan Dowd | |
| Sally | The Cat in the Hat Comes Back by Dr. Seuss Sally and the Limpet by Simon Jones Blueberries for Sal/ One Morning in Maine by Robert McCloskey Action Dogs books by Steve Barlow Sally Sore Loser by Frank J. Sileo The Midnight Gang by David Walliams | S |
| Sam | The Adventures of Sam Pig by Alison Uttley Leonardo the Terrible Monster by Mo Willems Sam the Firefly by P.D. Eastman Farmyard Tales books by Heather Amery Green Eggs and Ham by Dr. Seuss Don’t Put Your Finger in the Jelly, Nelly! by Nick Sharratt Shifty McGifty and Slippery Sam by Tracey Corderoy The Children of the Forest by Elsa Beskow At Home on the River by Peter Bently The Beast with a Thousand Teeth by Terry Jones A Balloon for Grandad by Nigel Gray Dear Donald Trump by Sophie Siers Lyttle Lies books by Joe Berger Sam Wu is Not Afraid of the Dark by Katie and Kevin Tsang Cloud Busting by Malorie Blackman Look What I’ve Got by Anthony Browne Birthday Boy by David Baddiel | S S – BP |
| Sami | Lost and Found Books by Cathy Cassidy | |
| Sandra | The Swish of the Curtain by Pamela Brown | |
| Sandy | Nightlights by Lorena Alvarez | |
| Sara Sarah | Postman Pat’s Treasure Hunt by John Cunliffe The Little Princess by Frances H. Burnett Owl Babies by Martin Waddell The Magic Box (Puddle Lane) by Sheila K. McCullagh | S S |
| Scarlet | Scarlet Ibis by Gill Lewis | |
| Scott | Adventure Island books by Helen Moss | S |
| Seamus | Harry Potter books by J. K. Rowling | S |
| Seren | The Clockwork Crow by Catherine Fisher | |
| Seth | The Last Chance Hotel by Nicki Thornton | |
| Severus | Harry Potter books by J. K. Rowling | S |
| Sheila | The Children of Cherry Tree Farm by Enid Blyton | S |
| Sherman | A Terrible Thing Happened by Margaret M. Holmes | ! |
| Shif | Boy 87 by Ele Fountain | ! |
| Sid | Six-Dinner Sid by Inga Moore The Battle of Bubble and Squeak by Philippa Pearce | |
| Simon | Simon Sock by Sue Hendra and Paul Linnet Simon and the Snow by Gino Alberti Just Enough and Not Too Much by Kaethe Zemach Only a Show by Anne Fine The Ghost of Thomas Kempe by Penelope Lively The Lost Magician by Piers Torday Over Sea and Under Stone by Susan Cooper | S |
| Sirius | Harry Potter books by J. K. Rowling | S, ! |
| Solomon | The Fastest Boy in the World by Elizabeth Laird | |
| Sonny | Sonny’s Wonderful Wellies by Lisa Stubbs | |
| Sophie | The Tiger Who Came to Tea by Judith Kerr Fred by Posy Simmonds When Sophie Gets Angry… by Molly Bang Sophie Johnson, Unicorn Expert and Detective Genius by Morag Hood The BFG by Roald Dahl Sophie’s Snail (and others) by Dick King-Smith Rooftoppers by Katherine Rundell Sophie’s Masterpiece by Eileen Spinelli | S oop |
| Soren | Charlie and Lola books by Lauren Child | S |
| Sorrel | Bloom by Nicola Skinner | |
| Stanley | Flat Stanley by Jeff Brown Alfie: a Friend for Life by Rachel Wells Holes by Louis Sacher | S ! |
| Stanton | Hubert Horatio Bartle Bobton-Trent by Lauren Child | |
| Stella | Stellaluna by Janell Cannon Stella and the Wishing Star by Suzanne Chiew Awful Auntie by David Walliams How to Survive Summer Camp by Jacqueline Wilson | |
| Stephen Steven Steve Stevie | Cereal Superfan by Julia Donaldson Stephen Hawking by Little People, Big Dreams The Shopping Basket by John Burningham The Steves by Morag Hood Stevie by John Steptoe | BP |
| Stuart | Stuart Little by E.B. White | |
| Summer | Secret Kingdom books by Rosie Banks | S |
| Sunny | A Series of Unfortunate Events by Lemony Snicket | S |
| Sunset | Little Darlings by Jacqueline Wilson | |
| Susan Sue | The Worst Princess by Anna Kemp Helpers by Shirley Hughes Green Smoke by Rosemary Manning Susan Laughs by Jeanne Willis Narnia books by C.S. Lewis Swallows and Amazons by Arthur Ransome Harry Potter books by J. K. Rowling Fox in Socks by Dr Seuss | S, H S S – |
| Suzy | Suzy Orbit, Astronaut by Ruth Quayle The Train to Impossible Places by P.G Bell | BP |
| Sybill | Harry Potter books by J. K. Rowling | S, ! |
| Sylvester | Sylvester and the Magic Pebble by William Steig | |
| Sylvia | Sylvia and Bird by Catherine Rayner The Antlered Ship by Dashka Slater The Wolves of Willoughby Chase by Joan Aiken | BP |
