Recommendation MAI-140: Review Major Incident plans for interoperability
From Manchester Arena Inquiry: Volume 2: Emergency Response, published 3 November 2022.
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.
In brief (written by this site)
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. The record below is the sources' own words.
Government response
Accepted in full
Delivery
Cabinet Office says completed (27 February 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 statement on delivery (1)
Cabinet Office (14 November 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
Published findings referenced by inspectorates, select committees, official progress reports, and other sources. Source type badge indicates whether the finding is independent or government self-reported. Each finding is this site's summary of what the source found, with a link to the source; this site does not add its own progress rating.
Summary by this site of the published finding
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.
Source
Responsible bodies
Themes and tags
Who has spoken
- UK Government
Response - Cabinet Office
Delivery statement