Challenger 2 TANK is a third generation British main battle tank (MBT) in service with the armies of the United Kingdom, Oman, and Ukraine

It was designed by Vickers Defence Systems (now BAE Systems Land & Armaments) as a private venture in 1986, and was an extensive redesign of the companys earlier Challenger 1 tank.The Ministry of Defence ordered a prototype in December 1988. Despite outward similarities to the Challenger 1, design and technological developments mean that only about 3% of components are interchangeable with the earlier vehicle.