An International e-Sports team which is headquartered in the United Kingdom competes  in what developed and published by Riot Games for Microsoft Windows and macOS?
Team Dignitas Team Dignitas is an International e-Sports team which is headquartered in the United Kingdom. It was founded on 9 September 2003 as a fusion of the "Battlefield 1942" clans Legion Condor and Sweden Kompanix and it was acquired by the Philadelphia 76ers in September 2016. While the clan began as a pure Battlefield clan in the beginning, it has since expanded into a wider range of games. In July 2004, Team Dignitas was registered as a company: Team Dignitas Ltd. The Managing Director is Michael "ODEE" O'Dell. Team Dignitas "League of Legends" currently competes in the North American League of Legends Championship Series, having been merged with Apex Gaming under 76ers ownership. The team had previously been relegated from the league by Team Dragon Knights.
Take-Two Interactive Take-Two Interactive Software, Inc. is an American multinational publisher and distributor of video games and video game peripherals. Take-Two wholly owns publishers Rockstar Games and 2K Games. The company's headquarters are in New York City, with international headquarters in Windsor, United Kingdom. Development studio locations include San Diego, Vancouver, Toronto and Novato, California. Notable game series published by Take-Two include "Grand Theft Auto", "Civilization", "NBA 2K", "BioShock" and "Borderlands". As owner of 2K Games, Take-Two publishes its 2K Sports titles, and creates free-to-play mobile titles through Social Point. It also acted as the publisher of Bethesda Softworks's 2006 game, "". As of September 2017, it is the third largest publicly-traded game company (after Activision Blizzard and Electronic Arts) in the Americas and Europe.