As per the post-Brexit free trade agreement between Australia and the UK, workers might no longer require a visa to travel.

Boris Johnson says it may happen as early as next Christmas. The idea of visa-free travel between the UK and Australia was thrown by Boris when he was the mayor of London.  

Australia is one of the 1st countries to sign a free trade agreement with Britain after the UK leaves the EU early next year.  

Australians can spend up to six months as a tourist in the United Kingdom. However, they would need a visa to have paid or unpaid work.