The Price of Coal
I suggest that people who like the film Kes watch Ken Loach's 1977 film The Price of Coal, which was also based on a Barry Hines novel. Whereas Kes has become a British cult classic, The Price of Coal has become obscure. It's not a happy film but it's a good one. In addition, the whole film is in good Yorkshire dialect.
https://www.youtube.com/watch?v=7y7ewB5q0us