Main Characters
- Francesca (Frankie) Thomas ) is a girl who dreams of being an actress. She is the leader of the Sleepover Club. Her best friend is Kenny. She can be quite bossy. Her favorite colour is Purple. Charlie of Series 2 is her cousin. She is an only child who lives with her parents, and she longs for a sibling. Her mother becomes pregnant in one episode.
- Rosalind "Rosie" Cartwright () is an aspiring writer and journalist. She wants to take after her father as he is a journalist. She was the last girl to join the SoC, in episode 2. She is the smartest of the girls and can be quite brash. Her favourite colour is Yellow. Her mother died and she lives with her father David and her brother Will. She has a crush on Lyndz's brother Tom.
- Felicity "Fliss" Sidebotham is a young fashion enthusiast. She was known as the bubbly fashionista and also she has a crush on her fellow student Ryan Scott. Fliss's parents are divorced and she no longer sees her father. Her mother remarries in the last episode of Series One. She has a younger brother called Callum, who was bullied in one episode. He hates The Sleepover Club. Her favourite colour is Pink. She is best friend with Lyndz. She can be shallow and self-centred.
- Kendra "Kenny" Tam is the athletic member of the club. She wishes to manage Manchester United F.C. when she is older. She takes part in all sorts of physical activities from soccer to athletics and is a fan of Manchester United F.C.. She lives with her sister, mother, father and grandmother. Her favourite colour is Orange. In the book series her name was Laura McKenzie. She is best friends with Frankie.
- Lyndsey "Lyndz" Collins is considered to be the most laid back and nicest member of the group and she likes animals. It has been mentioned that when she is older, she wants to run a horse riding school as she is an avid rider. She has a fraternal twin brother, Michael who is one of the M.M.Ms and she also has an older brother, Tom. Her favourite colour is Green. She is best friends with Fliss.