The largest segment of Australia's diaspora of 1 million resides in the United Kingdom.

[6] In that census, the highest concentration of Australians in the UK was recorded in south-west London, with sizeable communities in Earl's Court, Kensington, Hammersmith, Fulham, Shepherd's Bush and Putney.

[9] The 2011 UK Census recorded 113,592 residents born in Australia in England, 2,695 in Wales,[10] 8,279 in Scotland,[11] and 1,750 in Northern Ireland.

[10] The Office for National Statistics estimates that 138,000 people born in Australia were resident in the UK in 2017.

[14] The late-2000s recession was reported to have resulted in an increased number of Australians moving from the UK.