| 16/03/2015 | ACCC commenced review under the Merger Process Guidelines. |
| 02/04/2015 | Closing date for submissions from interested parties. |
| 23/04/2015 | Former proposed decision date of 7 May delayed to allow receipt of further information from Ramsay and WDS. |
| 13/05/2015 | ACCC received further information from the merger parties. |
| 11/06/2015 | ACCC published a Statement of Issues outlining preliminary competition concerns. |
| 02/07/2015 | Closing date for submissions relating to Statement of Issues. |
| 06/08/2015 | Ramsay withdrew its request for an informal merger review. Consequently, the ACCC discontinued its review without making a final decision. The former proposed decision date of the review was 27 August 2015. |
