Review Major Incident plans for interoperability
Manchester Arena Inquiry · Manchester Arena Inquiry: Volume 2: Emergency Response · Issued 3 November 2022 · Addressed to: College of Policing, Fire Service College, National Ambulance Resilience Unit, HM Inspectorate of Constabulary and Fire & Rescue Services, Home Office, Counter Terrorism Policing, JESIP
Government responseUK Government: Accepted (Nov 2025)
DeliveryCabinet Office says completed (Feb 2026)
Recommendation, verbatim from the inquiry
●Inquiry recommendation
The Home Office, His Majesty's Inspectorate of Constabulary and Fire and Rescue Services, the College of Policing, the Fire Service College, the National Ambulance Resilience Unit, individual police services and JESIP should review what changes need to be made to the Major Incident plans and Counter Terrorism Policing Headquarters Operation Plato guidance in order to achieve the aims set out in R45.
Manchester Arena Inquiry, Manchester Arena Inquiry: Volume 2: Emergency Response · 3 Nov 2022 Source PDF →
Published evidence summary
AI-generated evidence summary
The Inquiry asked emergency response bodies to review Major Incident plans and Operation Plato guidance. In February 2026, the Cabinet Office reported that Counter Terrorism Policing Headquarters had reviewed and updated its national guidance, completed training, and closed the work strand under multi-agency governance in January 2024 (Cabinet Office, Feb 2026). This update addressed Operation Plato guidance, while changes to Major Incident plans were not mentioned (Cabinet Office, Feb 2026). Previously, the UK Government had accepted the recommendation in full in November 2025 (Cabinet Office response, Nov 2025).
AI-generated summary of the record on this page, checked by a second model and automatic checks, 5 Oct 2026.
Government response
●UK Government · Accepted · 14 Nov 2025
Accepted in full
Response document: Manchester Arena Inquiry recommendations (GOV.UK page linking to the Manchester Arena Inquiry Recommendations Dashboard)
Delivery
●Cabinet Office says completed · 27 Feb 2026
Within the context of Operation PLATO, CTPHQ have reviewed and updated the national guidance in light of the recommendations. This has been launched and all training has been completed. This work strand has been closed via Multi-Agency Governance January 2024.
Earlier statements on delivery (0)
●Cabinet Office · 14 Nov 2025
Within the context of Operation PLATO, CTPHQ have reviewed and updated the national guidance in light of the recommendations. This has been launched and all training has been completed. This work strand has been closed via Multi-Agency Governance January 2024.
From: Manchester Arena Inquiry Recommendations Dashboard, original version (data file)
Published evidence
●JESIP · 1 Apr 2024
JESIP Joint Doctrine updated to v3.1 (April 2024) following inquiry findings on interoperability failures. Operation Plato reformed to cover all terrorist attack types, not just firearms. Emphasis extended beyond command-level to frontline responders.
JESIP Joint Doctrine Version 3.1, April 2024View source →
How this page is built
The recommendation and the government responses are verbatim from primary documents. Delivery statements and other bodies' findings are shown in their own words, each with its source. The summary is written by this site and labelled as such. The Index does not paraphrase sources or characterise intent; it records what has been published.