Continuity mistake: When Laura comes to the pub and has sex with one of the guys, she spots the (hidden) video camera at the bar. One moment, it is entirely covered with a cloth. The camera angle changes and it is partly uncovered.
When the jockey falls from the horse, there is a 2nd quick shot of the same scene, to extend it a few seconds. In the first part, the horse is running free; in the 2nd, we can see the bridle that's leading the horse forward.