What is the primary requirement for presenting evidence in an interlocutory application in Queensland?

The primary requirement for presenting evidence in an interlocutory application in Queensland is evidence by affidavit. This is significant because interlocutory applications often deal with urgent matters where time constraints limit the ability to present full trials. Affidavits allow parties to present their evidence in a written format, which can then be considered by the court without the need for live testimony.

Affidavits are sworn statements that detail the facts relevant to the application and are typically accompanied by exhibits or documentary evidence. This method streamlines the process, ensuring that the court can efficiently assess the facts presented and make decisions based on written records, which is crucial in maintaining the momentum of cases where immediate relief might be sought.

In contrast, other forms of evidence like testimony by witnesses involve delays as they require the presence and examination of witnesses in court. Similarly, exclusive reliance on documentary evidence might not capture the nuances of a case that an affidavit can provide through a detailed narrative. Oral submissions, while important in presenting legal arguments, do not suffice as a primary form of evidence—they summarize the legal principles but do not establish factual evidence needed for the interlocutory relief sought.