Wavell’s request to ship another 500 tanks to the Middle East, to many in the War Office, seemed that it was a lot to ask for when 8th and 9th Armoured Divisions in the Home Force were very short of tanks, even for training. On the other hand, the first quarter of 1941 had seen another improvement in the numbers of tanks being produced by Britain’s workers. 720 tanks had been delivered in three months. The best estimate for the second quarter was that the numbers would increase again to about 1000.
Of these 720 tanks produced in the first quarter of 1941, 220 were Valiant I* cruisers and 90 were A15 Cruisers. There was still a higher proportion of tanks being made that were Infantry Tanks: 108 Matilda II and 280 Valiant I. 32 Mark VII Tetrarch Light tanks were also completed. In addition, deliveries of self-propelled guns based on the Valiant I hull were beginning to be produced, as were advanced prototypes of the A22 Infantry Tank. It was expected that while the numbers of Infantry and Light tanks would remain about the same in the next quarter.
The expected rise of almost 25% production would be primarily as the Nuffield Organisation began to ramp up production of the A15. After much discussion, and secret consultations with both Vickers and the Royal Ordnance, the primary problem besetting the tank was found to be the external mounting of the air cleaners. This meant that the Liberty engine experienced rapid wear and tear, leading to the other problems which were the symptoms, not the cause, of its unreliability. An experiment was made which put concertina air cleaners inside the fighting compartment. From the trials this looked as if it might be a real solution. If Nuffield were prepared to modify the A15, probably having to call it a Mark II, then the tank would be considered capable of being used overseas. Some issues regarding the build quality and, unremarkably, the operational maintenance of a new type, was also brought to Nuffield’s attention. The fact that the A15 tank was still under-gunned and under-protected, without the capacity be upgraded, was problematic, but at least the main design fault could be rectified.