Tranche 5 of the Undercover Policing Inquiry looks at issues around undercover policing units other than the Special Demonstration Squad or the National Public Order Intelligence Unit.
According to the Twelfth Update Note (July 2023) , work on these issues has already begun but little further is known. There was no information provided in the Thirteenth Update Note.
The non-state core participants for this tranche are the former MP Dave Nellist and, previously, Azhar Khan. In 2025, these were joined by 'Gabriella' and her daughter 'Deborah', who were linked to the notorious Avon & Somerset Police case.
In April 2024, the Inquiry released documents to anonymity applications by a number of undercovers and related officers who will appear in this tranche. These have been given the nominal form RFNxx. To date, the known nominals are:
RFN1, RFN2, RFN3, RFN8, RFN9, RFN16, RFN17, RFN21, RFN24, RFN25, RFN26.
For procedural documents relating to their anonymity process, see the Tranche 5 Officers page.