The first original comic ever created locally for Marvel UK was the Planet of the Apes spinoff “Apeslayer.”
The Marvel Planet of the Apes comics were so popular in the UK that they redrew Don MacGregor’s War of the Worlds sequel comic, Killraven, into Apes comics, with Killraven renamed “Apeslayer,” and the Martians redrawn as apes. They didn’t even erase the fact that they had tripods in the background.
BONUS: Carnilla Frost was redrawn as “Sandra Simian.” Was she supposed to be part gorilla? The comic never answered.