Production of these started in 1945. By the end of the 1946 the range had been rationalized to only two models, the AZ5 and AZ9, two virtually identical models for loads of 45 cwt and 58 cwt respectively. It appears that only tyre equipment and perhaps springs differentiated the two models. Being somewhat similar to the prewar model which they replaced, the AZ5 and AZ9 still retained design features like a centre accelerator right up until production ceased in 1949. Early models had the 2.84 litre Albion EN271 petrol engine, whereas later models had the larger 3.04 litre EN272 unit. The postwar AZ series could normally be identified by the front bumper which joined the two front wings.