Underpriced vehicles, British infantry dominating most engagement? In which world exactly? The only underpriced vehicle in the entire British arsenal is the Comet perhaps, the Churchill is still shit and not worth the price, the Cromwell had a nerf to it's target size and compared to the other medium tanks (except for the T-34) it has no upgradable MG to fight infantry with, you nerf or take that away from the UKF and you'll severely cripple it's Armored support. And no, un upgraded British infantry only win in the early game when in cover, later if they don't get Brens they're worthless, especially IS when they hit Vet 3, RE are the only way to fight the British's major weakness which is manpower bleed, especially from snipers, altho I can agree that they feel OP sometimes, specifically when one goes for double Brens on them then Heavy Engineers and then the flamethrower upgrade from the Mobile Assault Regiment but that's about it.
Grens late game if they dont upgrade to LMG are worthless
Volks late game if they dont upgrade to StG are worthless
Obers late game if they dont upgrade to LMG are worthless
Riflemen late game if they dont upgrade to BARS/LMG are worthless
Guards late game if they dont upgrade to LMG are worthless
Panzerfusilier late game if they dont upgrade to G43 are worthless
So yes, Unupgraded british infantry if they dont upgrade to LMGs in late game they are worthless