In May 2024, Allens had offices in Brisbane, Hanoi, Ho Chi Minh City, Melbourne, Perth, Port Moresby, Singapore and Sydney.
Through its integrated alliance with Linklaters, Allens' network extends to offices in Abu Dhabi, Africa, Belgium, Brazil, China, Dubai, France, Germany, Hong Kong, Indonesia, Italy, Japan, Korea, Latin America, Luxembourg, Netherlands, Poland, Portugal, Spain, Sweden, Thailand, Turkey, Ukraine, United Kingdom and United States.
[6] The other major predecessor firm of Allens is Arthur Robinson & Co., which began trading in Melbourne, Victoria on 11 May 1914, just prior to the outbreak of World War I.
[11] In the early 1990s, a controversy arose when Adrian Powles, a former partner in the London office, was discovered to have secretly accessed a client's trust account to fund a gambling addiction.
A Sydney journalist, Valerie Lawson, published a book in 1995 entitled The Allens Affair that details the Powles case and touches on much of the early history of the firm.
Included within its collection are works by Rosalie Gascoigne, David Aspden, Emily Kame Kngwarreye, Dale Frank and Ildiko Kovaks.