Fiona Crosbie

Fiona Crosbie

Sydney | +61 2 9230 4383

Fiona is Chairman of Allens.

Fiona advises clients in complex merger clearances, access matters, cartel and other antitrust investigations and litigation. Fiona is often called on to assist companies formulate regulatory strategies where the ACCC is a key stakeholder.

She has been involved in the largest and most complex merger clearances in Australia, including working with international counsel and economists on global mergers. Fiona has acted in high-profile competition cases, including proceedings that established the application of legal professional privilege to investigations brought by the competition regulator, proceedings alleging collusive conduct by major retail chains, the land and submarine cable cartel and seminal misuse of market power cases.

Fiona is Chair of the Competition and Consumer Committee of the Law Council of Australia and is an active speaker on regulatory and competition issues. Fiona is recognised as a leading competition practitioner in Chambers Asia-Pacific, The Asia-Pacific Legal 500, Best Lawyers and Global Competition Review. In 2016, Global Competition Review named Fiona in its list of leading women in antitrust worldwide.


  • BcIMC – acquisition of a stake in Glencore Agriculture
  • Dairy Farmers – sale to National Foods and the authorisation of its supply arrangements
  • Gambro AB – acquisition by Baxter International, including negotiation of a complex undertaking
  • HealtheCare and Healthscope – acquisitions of a number of hospitals
  • Hutchison Telecoms – merger with Vodafone Australia
  • Johnson & Johnson – acquisition of Synthes
  • M2 Group – merger with Vocus and subsequent acquisition of Nextgen Networks
  • Oracle – acquisitions of PeopleSoft, Siebel and Sun Microsystems
  • Pfizer – numerous significant global mergers including US$17 billion acquisition of Hospira, divestment of its global infant nutrition business to Nestlé and proposed merger with Allergan
  • St.George Bank – merger with Westpac Banking Corporation, the largest bank merger ever in Australia
  • Wesfarmers – acquisition of Coles, at the time the largest merger in Australia corporate history
  • West Australian Newspapers Holdings – acquisition of Seven Media Group
  • Western Digital – acquisition of Hitachi

Enforcement & advisory

  • Pfizer – successfully defended the highly publicised court proceedings commenced by the ACCC for alleged misuse of market power
  • Global investment banks – ACCC cartel investigations
  • Medicines Australia – competition adviser to the industry body for the pharmaceutical industry, involving multiple authorisation applications
  • Energy and resources sector – frequently advises joint ventures on cartel and information sharing issues, and acted in Australian Competition Tribunal proceedings regarding the acquisition of Macquarie Generation


  • Airports – regulatory access and competition advisor to a number of airports
  • Sydney Airport – successfully resisting an application for access declaration of services and generally advising in relation to the proposed Western Sydney Airport
  • Port of Brisbane Corporation – successfully resisting an application for access declaration of portside services
  • Infrastructure investors – advising on the access and other regulatory risk surrounding their acquisition of port, rail and other infrastructure assets
  • Telecommunications – conducting proceedings in the Australian Competition Tribunal on appeals from decisions of the ACCC regarding access pricing