I came across Sweet Maddie Stone by accident when searching on YouTube and became interested since it starred Jessica Barden, an actress I like. Sweet Maddie Stone was technically a student film but it was made at a very high standard and it was able to attach talent like Barden and Jason Flemyng.
Barden played a gobby hard nut who ruled the schoolyard and was essentially a drug dealer, but loss her power when her dad gets arrested. Barden was great at playing someone who was an utterly despicable character, surrounded by equally despicable students in her school.
Director/co-writer Brady Hood was able to make a film that mix gritty Britishness with a fanciful quality since Maddie was dominating the school by selling sweets.