Watching this without any idea of origin and without preconception I found it to be a very enjoyable film with some good acting and special effects. However; looking into whether this story was actually true I was left disappointed. Ultimately it is based on the Story of James Glaisher's breaking of the altitude record in 1862. But sadly the films creators saw fit to do away with his real life male accomplice Henry Tracey Coxwell to be replaced with a fictional female character "Amelia Rennes". I really am so bored with watching films that feel the need to shoehorn in a strong female lead or a coloured actor just for the sake of it (yes they do this as well). You know what would be more interesting? Sticking to the facts or writing a completely new story.