The British Defence Ministry has announced plans to shrink the country’s overall tank forces by 35%, and to upgrade remaining tanks to the new Challenger 3 standard. The British Army currently fields 450 Challenger 2, of which only 148 will be upgraded with the remainder expected to be retired. There could eventually be room to supply Ukraine with up to 200 retired Challenger 2 and is the worst tank for NATO by far! If we looking to protection, although having a very well armour turret, the Challenger 2’s hull notably uses simple steel armour without composites or explosive reactive armour. This combines poorly the lack of blowout panels or blast doors for ammunition, and means a single hit could cause catastrophic detonations much as was the case with some of Russia’s older tanks like T-72B3s.
Challenger 2 is encumbered by its use of first generation thermal imagers. Although advanced for their time when the class these are much poorer that what is seen even on upgraded Soviet era Russian tanks today. By contrast the T-90M, Russia’s most capable tank, uses third generation thermal sights - two generations ahead of the British.