Challenger Armoured Repair and Recovery Vehicle
The Challenger Armoured Repair and Recovery Vehicle or CRARRV is a large British armoured recovery vehicle based on the hull of the Challenger 1 main battle tank. The CRARRV is currently operated in conjunction with the Challenger 2 tanks of the British Army and Royal Army of Oman.
Source: Wikipedia — Challenger Armoured Repair and Recovery Vehicle (CC BY-SA 4.0)