Following favorable reports on observation of the Soviet activities, the British War Office arranged purchase of Christie's last remaining prototype and licensing of a Christie design through the Morris Motors Group. The deal was done by phone for £8,000 however, the British discovered that Christie had already mortgaged the vehicle. Why payment necessary to secure the vehicle was not deducted from this figure is not clear but the net cost rose to £10,420 18s 4d, which included British Customs Duty and 'other expenses'. The US authorities refused its export as it was war materiel. The vehicle was dismantled sufficiently to meet specification as an "agricultural tractor" and so be exported. The removed parts were then shipped to the UK in crates marked as "grapefruit". Christie's design still had a number of faults that he had never addressed and though the general features were retained, the design was completely reworked to form the British Cruiser Mk III (A13).