 Using a milk separator, they bought milk from local farmers, and after extracting the cream and whey, sold the skim back to the farmers for pig feed.In 1888 three more of the Gates brothers and their sons joined the business, which led to the formal registration of the company under the name of the West Surrey Central Dairy Company, which after development of its dried milk baby formula in 1906 became Cow & Gate.In 1901, the Dennis brothers built the first purpose-built car factory in England.