"As with most, if not all, interlocutory matters it is a mistake to attempt to formulate hard and fast rules for the application of O 26A. But a number of principles can be drawn directly from the wording of the rule. Dealing first with r 4, the applicant must establish that it either wants to commence proceedings against the potential party or to take proceedings against the potential party in the course of an action to which the person is a party. The use of the word 'wants' in this rule is interesting. In the context in which it appears, it must mean 'is considering' or 'anticipates'. It cannot be read as meaning that a determination has been made.
Next, reasonable enquiries must have been made as a precondition to the rule being activated. What are reasonable inquiries, will depend on the circumstances. However, I would regard this as a low threshold test. But certainly something must have been done.
Finally, the applicant, after reasonable inquiries, must have been left in a position where it had not been able to obtain sufficient information to enable a decision to be made as to whether to commence or take the proceedings.
...
In my view it is possible to infer, in most cases, from the fact that proceedings have not been initiated that sufficient information is not available to enable a party to make a decision as to whether or not to commence proceedings...it would take very firm and definite evidence that final decision has been taken by the applicant before discovery from the potential party could be denied. If such a final decision had been taken, then the appellant would be guilty of an abuse of process."