Driver Training Tanks (DTT) have been brought in to train the Ukrainian crews for the Challenger 2 tanks
tanks for Ukraine: Ukrainians need more training to use Challenger 2 - Wallace « News
Ukrainians mastering the Challenger 2 through the use of DTT - Militarnyi
Ukrainian troops return home after Challenger 2 tank training in UK, Ukraine
Ukrainians are about to start training on Challenger 2 tanks in Britain
Challenger tank - Militarnyi
Another set of photos of Challenger 2 somewhere in Ukraine. : r/TankPorn
Ukrainian trainees find Challenger 2 tank is just their cup of tea
UK-Made Challenger 2 Destroyed for the First Time in Ukraine
Ukrainian Training on UK Challenger 2 MBTs Completed