In 2021, the Department acknowledged publicly concerns about excessive levels of noise and vibration on the Ajax vehicles. The Department admitted that because of shortcomings with its safety processes, which made it complicated to raise issues, it had injured some of its own soldiers, which it rightly described as “unforgivable”.29 The Defence Science and Technology Laboratory (DSTL) had first warned Defence Equipment & Support (DE&S) of concerns about Ajax’s potential compliance with legislative requirements in