It's probably organized as part of the election campaign so, as you say, best disregarded as a source. However the Tories do have a lot of explaining to do on police numbers. As a party of 'law and order' they don't seem to be doing a great job in protecting us.
I'd like to see the whole video, rather than the 2 minute clip, becuase yeah.. I don't trust accounts like this for taking things out of context.