Matthew Vaughn discusses the sequel to The King's Man and a new era he wants to explore within the Kingsman franchise. Kingsman began in the modern era, following Eggsy as he is recruited into the Kingsman organization by Harry, who becomes his mentor, and finds his place in the world. The franchise grew with The King's Man, a prequel that dove into the creation of the Kingsman Agency during World War I.
https://screenrant.com/kingsman-new-era-matthew-vaughn-reveal/