"The Inquiry received applications from over 380 individuals, groups and organisations. Many established the criteria for core participant status. In those cases the applicants were notified that designation would be made." See the full text:
“The Inquiry received applications from over 380 individuals, groups and organisations. Many established the criteria for core participant status. In those cases the applicants were notified that designation would be made.”
See the full text: Lord Justice Pitchford: Undercover Policing Inquiry: Core Participants Ruling (pdf)
and see: Undercover police inquiry accidentally reveals witnesses data (The Guardian, link)