Aon - proposed combination with Willis Towers Watson


  • Aon plc


  • Wills Towers Watson plc


Aon proposes to combine with Willis Towers Watson.

Aon and WTW are professional services firms that provide insurance and reinsurance distribution and consulting services, as well as consulting services on retirement benefits, health and welfare, and human capital. Aon and WTW operate in Australia and globally. 

Market inquiries

Submissions are invited from interested parties regarding Aon's proposed combination with Willis Towers Watson.

The closing date for submissions is 16 October 2020. Submissions should be forwarded electronically (preferably in PDF format) to with the title "Submission re: Aon/Wilton Towers Watson - attention Tim Byrne/Nicholas Wellfare".

Following the closing date, queries regarding the ACCC's review may be addressed to Tim Byrne and Nicholas Wellfare at For more details, please refer to the attached market inquiries letter.

Market inquiries

Document title Date


02/10/2020ACCC commenced informal review under the Informal Merger Review Process Guidelines.
14/10/2020ACCC is awaiting information from the parties. Former provisional decision date for announcement of ACCC's findings (17 December 2020) is delayed.
16/10/2020Closing date for submissions.
23/11/2020ACCC received further information from the parties.
11/02/2021Provisional date for announcement of ACCC’s findings (as outlined in the Informal Merger Review Process Guidelines, this may be a final decision or release of a Statement of Issues).

Project staff

  • Tim Byrne
  • Nicholas Wellfare