Justin Castelan, Barrister

Justin has been at the Victorian Bar for 18 years and specialises in defamation and commercial law. He set up this blog in 2012 to specifically write on developments in defamation and media law in Australia and throughout the common law world. Since that time he has posted more than 100 articles and contributed to other publications such as The International Forum for Responsible Media Blog in the UK.

He has been engaged as Counsel to act for many clients, including business people, political identities, sportspeople, internet publishers and Australian film bodies. Presently, he acts for Whirlpool, the largest internet forum in Australia, having more than 800,000 registered members and the publisher of more than 2.4 million threads. He is a regular speaker for the Leo Cussen Institute on the topic of Defamation Law on the internet.

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Recent cases in defamation law


Horse trainer’s claims scratched: Cummings v Fairfax [2018] NSWCA 325

Anthony Cummings and his company, Anthony Cummings Thoroughbreds Pty Ltd, train horses. They sued Fairfax Digital, The Age, Fairfax Media and a journalist, Kate Leahy, in respect of 3 articles published online on 25 February 2010 and a poster advertising a front-page article published in the Sydney Morning Herald, also on that day. Fairfax essentially…

The plaintiff

Chris Gayle raises bat with triple-century damages [2018] NSWSC 1838

Chris Gayle, a West Indian cricketer and international T20 star, has hit more centuries than anyone in the game’s shortest format, but rarely has he had a better result than in his recent $300,000 defamation win in the NSW Supreme Court. In 2016, while playing T20 in the Big Bash League for the Melbourne Renegades,…

QSC cropped

Market collapses for share trader’s defamation claims: Jones & Australian Shareholder Centre PL v Aussie Networks PL & Eiby [2018] QSC 219

The first defendant owned and ran an internet forum, Aussie Stock Forums, used to discuss topics related to the stock market and investments. The second defendant was its sole director and shareholder. He left a comment on the forum in response to a request for information about Australian Shareholder Centre PL (ASC), who, together with…

Defamation Hall of Fame

The Classic defamation trial is always one for the ages. Here’s some of our favourites

Contributed to

Justin Castelan appeared in the following cases

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