It's a very interesting and important story but I think they could have done a better job with the film. It drags a bit and doesn't really go into any real depth with the characters. I felt like I should care because of the issue, but not because of the characters.
A crowd-pleasing little man, or woman in this case, against the big corporation tale, this Sally Hawkins vehicle benefits from the current political and financial climates and a willingness to overlook the simplicity of its arguments in sight of what is plainly right. As a film there is little depth into the actual characters of the story and there is a driving force missing from the core of the film.
Everyone should watch this film. It is interesting to see the blatant, unabashedly unashamedly sexism of yore, which contrasts quite strongly with the insidious, disguised (and therefore harder to combat) sexism of today.