Millie Inbetween

Millie McDonald (Millie Innes) is a 12-year-old girl who lives with her 15-year-old sister Lauren McDonald (Tallulah Greive). Their parents have split up, so the two sisters are constantly swapping living with 'Mum' Sharon, (Hannah Jane Fox) and 'Dad' Tony (James Bachman, later Richard Lumsden). Millie loves the upsides of her new family set-up; two Christmas celebrations, two birthdays, and two bedrooms. However, the downsides are more tricky to come to terms with, as her parents start new relationships. The parents' new partners have children, too - and they all want to move in. Sharon has a new partner called Mike (Jeremy Edwards), who has a son called Craig (Theo Stevenson), who is a nightmare. Tony meets a new partner called Amber (Jaye Jacobs), who has 2 children called Fran (Mya-Lecia Naylor) and Jake (Marley Lockhart).

Great Aunt Gloria visits, still convinced Sharon and Tony (now played by Richard Lumsden) are still married, Millie celebrates her 13th birthday, Lauren trains for a hike with the school, Millie and Fran go head to head in a spelling-bee, Craig goes to stay with his mum at Christmas when he feels left out at home, Jake and Fran's dad turns up at the flat, Mum loses her job at Sunnyshopper, Mum decides to get tips off of Amber to try and be cool, Millie's English teacher arrives at the house to talk about Millie's poem, Lauren gets all loved up with Craig's new mate, Justin, Tony and Amber split but soon get back together, Jake bonds with Craig after Mike forces Craig to look after him, Mike proposes to Sharon and the whole family go on a camping trip together.

Tony and Amber are moving to a bigger flat while Craig has a new mate, Millie tries to be bad in order to go to a party, Amber announces she is pregnant, Millie's grandparents unexpectedly turn up on Christmas Day, Mike loses his job at the gym and is too scared to tell Sharon, Millie needs to start thinking about her subject choices at school, Fran gets a temporary tattoo much to the horror of Amber, it is Father's Day and Tony thinks Millie and Lauren have forgotten about him, the house goes electricity free for a week, Millie, Lauren and Craig want to be home alone so they send Mum and Mike to Dad and Amber's flat, Millie fakes a boyfriend to get the attention of Lauren, Mum and Mike eventually get married and Amber gives birth to a baby boy named Hector.

Craig moves out to go to college and Lauren meets a boy named Declan (Richard Wisker), who later becomes her boyfriend. Dad and Amber move to Spain, so Fran and Jake are looked after by their grandma, Flora (Llewella Gideon). Millie tries to befriend a girl, Jessie (Rhianna Merralls) in her maths class who is a 'wild' girl. Meanwhile, Mike’s nephew, Leo (Oscar Morgan), moves into the house. Lauren deletes her social media after a message mix-up and Mum and Mike spark concern when they start to argue. Millie ends a feud between Fran and Jake. Jessie is having trouble at home so Millie tries to help her and Millie starts blogging to give advice to parents. At the end of that series, Lauren leaves to start college and Millie has to decide between her Mum or Dad's holiday. She picks neither of them and decides to volunteer and help in Kenya. Also, as well as Lauren leaving, so does Leo.

Due to Jaye Jacobs returning to Holby City, she became a recurring cast member.[5] Innes served as an associate producer.[6]

Declan and Dad each drop a bombshell and everyone's future is turned upside down. Millie and Craig travel to Spain in a mission. Craig and Millie race against time to try and save her dad's job.