Rudolf the Black Cat
ルドルフとイッパイアッテナ (original)
Rudolf, a black stray cat, is suddenly separated from his beloved master. He unexpectedly wakes up in a long-distance truck that takes him to metropolis Tokyo. There, he meets Ippai-attena, a big boss cat feared by everyone in town. Unable to return home, Rudolf starts a life as a stray with Ippai-attena, but Ippai-attena isn't all that he seems to be.
Starring Ryohei Suzuki, Mao Inoue, Norito Yashima, Nana Mizuki, Rio Sasaki, Arata Furuta, Sandayuu Dokumamushi
It's a animation and action & adventure movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United Kingdom.