In 1847, Scottish immigrant William Arnott opened a bakery in Morpeth. Later in 1865 he moved to a bakery on Hunter Street, Newcastle, New South Wales, Australia, providing biscuits and pies to townspeople and ships docking at the local port.Until 1975 the company was under family control with the descendants of William Arnott.
After arriving in Australia, William Arnott first started a baking company in Morpeth, New South Wales.He continued working as a baker, before he decided to try his luck gold mining in 1851, He was not successful and returned to being a baker.William Arnott established the William Arnott's Steam Biscuit Factory in Newcastle, New South Wales.It was named that as his biscuit making machines were steam powered.In 1894, Arnott purchased a biscuit factory in Forest Lodge, Sydney. his biscuits had already begun shipping to Sydney in 1882. William Arnott came up with the Milk Arrowroot biscuits, a combination of arrowroot biscuits and plain milk biscuits they were made for children's food and were very popular, other rival companies tried to come up with imitations of the Milk Arrowroot biscuits. William Arnott also produced Tim Tam, Jatz and SAO biscuits.