Classified Challenger tank specs leaked online for videogame
Just because it's classified doesn't mean it's valuable. Lots of stuff is classified for bureaucratic reasons. Also, there's little about the Challenger 2 that opposing forces couldn't have researched. The tank itself has been around for more than 2 decades, and the Soviets/Russians have been consistently able to penetrate British security for the last 70 years.The gun is nothing special, and it's performance is well known. Chobbham/Dorcester armor has been around for quite awhile, and isn't unique. The US has sold M1s to Egypt, Iraq etc with Chobbham armor.