Swarm is a TV show on British national television from BBC4 with an average rating of 3.0 stars by TelevisionCatchUp.co.uk's visitors. We have 2 episodes of Swarm in our archive. The first episode of Swarm was broadcast in May, 2013. Did you miss an episode of Swarm but don't you wan't that to happen in the future? Please set an alarm and add Swarm to your favourites, so we can remind you by email when there's a new episode available to watch. For free!