Land was purchased in 1920 in the area now known as 'The Rocks' in Sydney. It was here that Bushells was to build its seven-story head office and incorporate new tea blending and packing methods of both tea and coffee. This was to remain the head office and tea factory for the next 40 years.

In 1937 Bushells Ltd formed a company in New Zealand. To introduce their product to New Zealand the company sent every housewife on the electoral roll a personally addressed letter together with a card entitling her to a half pound (225g) of tea, completely free of charge. This quickly established the company and within a year it had a huge section of the tea market.

In about 1945, J.A.D. Gibson Pty Ltd, who had previously sold the tea division of their business to Robert Timms, was itself taken over by Bushells. At this time Gibsons was manufacturing coffee essence and roasting coffee in Sydney and in Newcastle.

In 1955 Bushells took over their long time rival in the New South Wales market, Inglis Ltd. The purchase of the company brought with it a significant number of brands ranging from matches (Red Head) to canned fish, sauces, wine and spirits and a flour mill in Ultimo that produced a type of porridge. There is even a record of owning a patent for a 'clothes drying apparatus'. Included in the beverage list were the teas 'Billy Tea' 'Goldena', Aromatte, 'Kofe-Kol' and 'Uncle Tom's Pure Coffee'. For a number of years the company continued to trade in its own name, but gradually the factories and depots were amalgamated into Bushells.