Has anyone mentioned Taron Egerton? He was good in the Kingsmen films, and also excellent in Eddy the Eagle. A quick Google suggests that there were rumours he was going to get the part (back in March 2024) but looks like he says he would not be the right fit. I disagree. He may be baby-faced with the physique of a racing snake, but I think that adds to the under-dog type scenario. It would be no fun if you had Dwayne Johnson for example, as you'd expect a muscle-bound hulk to dispatch the villains post haste. Having a smaller character IMO forces them to use some good old British inginuity and cunning, and a swiss army watch