https://www.slab.org.uk/guidance/limited-availability-of-advice-and-assistance-for-tracing-relatives-or-witnesses-and-fishing-enquiries/
Advice and assistance is not available:
An increase can be granted to find out where the person is, if:
We will not grant an increase to employ a private investigator in an adultery case without details about the circumstances in which the alleged adultery is taking place. These details should include the address at which it is believed to be taking place and the likelihood of getting evidence.
Any increase will normally cover getting a report from one enquiry agent only. It will only cover two if it is shown that the court in which the action is to be raised will not accept the evidence of a single enquiry agent or there are other reasons for two agents to report.
Increases in authorised expenditure under advice and assistance and ABWOR employment of third parties
View instances where A&A increases for expert witnesses that are located at a distance from the court and your client with the factors to address.