The Swarm is a steel roller coaster located at Thorpe Park in the United Kingdom. The Swarm was the world's second Wing Coaster model designed by Swiss roller coaster manufacturer Bolliger & Mabillard and the first one located in the United Kingdom. Construction commenced in May 2011, and the coaster opened on 15 March 2012. From 2013 until 2015, the last two rows of each train were reconfigured to face backwards, while the first five rows faced forward. This was restored to the original configuration in 2016.