The Undercover Policing Inquiry acknowledged that it would be dealing with numerous sensitive issues, e.g. security issues around the use of tactics, and the needs of victims of undercover policing. Because of this, the Inquiry recognised that it needed to consider the manner in which evidential hearings would be held.
Central to some of these discussions was balancing the need to protect Restriction Orders over information and identities against the need to have the Inquiry held in public as much as possible.
The Inquiry consulted on a number of issues:
- venue and facilities for those attending hearings;
- communication, recording of proceedings, and live streaming;
- the handling of evidential documents;
- the giving of oral evidence; and
- facilities and support for witnesses on the day they gave evidence.
In 2019, this process cumulated in a Hearing Protocol in which the Inquiry set out how it generally expected to manage things. Exceptions to the process or requests outside the above topics are considered special measures and require specific applications.
Following the Tranche 1 Phase 1 evidential hearings in November 2020, it was recognised that some issues needed reviewing, including the use of a rolling text transcript for those not able to attend the Inquiry hearings in person, and the use of Rule 10 questions. These were dealt with in the ‘Directions Hearing’ of January 2021 and updated in the Directions issued by the Inquiry Chair on 1 March 2022 ahead of the Tranche 1 Phase 3 hearings.
In 2024, the Inquiry issued a refinement of the Hearings Protocol, though without submissions or hearings from other parties.
There have been other issues discreet issues, separate to the Hearings Protocol, considered from time to time. These include how to handle breaches of Restriction Orders, and the use of social media during the evidential hearings. There have also been bespoke hearings on Restricted Reporting Orders and special measures as relating to the evidence of officers such as HN109. A list of such procedural hearings are in the following table:
| (P14) Tranche 1 Phase 2 Directions Hearing | 26 January 2021 |
| (P15) Restricted Reporting Orders | 12 April 2024 |
| (P16) Issues re Tranche 2 Restricted Reporting Orders | 5 November 2024 |
| (P17) Hearing re Tranche 2 Closing Statements | 11 Feb 2025 |
| (P18) Hearing re special measures for evidence of HN109 | 23 January 2025 |
| (P20) Hearing re Chair's Ruling on HN81 | 3 November 2025 |