In 1944 he launched his own company A.L. Tozer Ltd. The business was based in Cobham, Surrey, and successfully began offering improved varieties to the market gardeners in the Thames valley area. Tozer was a proficient vegetable specialist and had already gained awards from the Royal Horticultural Society for a number of reselected varieties.
Soon after, Dr. Dermot Dawson joined the company, after gaining his PhD in plant genetics. He was almost certainly the first scientifically qualified plant breeder in the UK vegetable trade at the time. In the early years of the company, a number of market leading varieties were bred, developed and introduced to suit the post war grower and consumer.