If you can bring yourself about to ignore blatant agenda-promoting unhistorical propaganda such as:
All the protagonist’s friends being women
An incredibly unhistorical proportion of colored people
All men in the film presented as prejudiced, misogynistic, evil, morons with the sole exception of the protagonist’s partner, who is of course of African descent, and who is still presented as undecisive, coward and unworthy to rely upon, but eventually manages to do the right thing
The police officer who actually gets the job done being a woman and on top of that, of Indian descent
The judge being of African descent. (I could barely hold my laughs at that point; I bet it would be hard to find a single colored judge in the whole British Empire back then)
Then it’s not a bad film. Very nice cinematography and acting at the usual high British standards.