This pair denotes how many Australian Dollars are needed to purchase one British Pound. Often, the Australian Dollar is referred to as a risk currency due to its relatively higher interest rates and correlation to global equity markets. The British Pound depreciated relative to the Australian Dollar after 2008 and only began making a significant rebound in 2013 in light of declining growth in China and a slowdown in the global commodity supercycle, which has hurt Australia's largest sector, mining.
Polling for the UK-EU referendum will take place between 7am-10pm BST on June 23, and official results won’t be out until 10am BST on June 24. Markets will know which way the winds are blowing well-ahead of then.