The third night of War of the Worlds UK was a multi-promotional supershow jointly produced by Consejo Mundial de Lucha Libre (CMLL), New Japan Pro-Wrestling (NJPW), Revolution Pro Wrestling (RPW), and Ring of Honor (ROH), that took place on August 20, 2017, at the Edinburgh Corn Exchange in Edinburgh, Scotland, and was headlined by a Street Fight between Jay Lethal and Silas Young.