The Australian Agricultural Company is Australia's oldest agricultural company. Its largest shareholder is Joel Lewis, who is one of the richest people in the United Kingdom. Number eight is the North Australian Pastoral Company. Its location australia. 14.8 million acres owned. The company, one of the biggest cattle companies in the world. Founded in 1877, the Jumbrook Pastoral Company. Its location australia. 14.2 million acres. The Jumbrook Pastoral Company is the largest producer of wool in Australia and at number ten, the Handbury Group