Review Major Incident plans for joint working
Manchester Arena Inquiry · Manchester Arena Inquiry: Volume 2: Emergency Response · Issued 3 November 2022
Government responseUK Government: Accepted (Nov 2025)
DeliveryCabinet Office says in progress (Feb 2026)
Recommendation, verbatim from the inquiry
●Inquiry recommendation
Those organisations should consider what changes need to be made to Major Incident plans in order to achieve those aims.
Manchester Arena Inquiry, Manchester Arena Inquiry: Volume 2: Emergency Response · 3 Nov 2022 Source PDF →
Published evidence summary
AI-generated evidence summary
The Inquiry recommended reviewing Major Incident plans to improve joint working. In February 2026, the Cabinet Office reported that the tri-services had produced and signed off Version 3 of the Joint Operating Principles (JOPs) for responding to marauding terrorist attacks (Cabinet Office, Feb 2026). The department stated that the document incorporates operational learning, covers areas including communication, casualty management, and joint understanding of risk, and undergoes an annual review (Cabinet Office, Feb 2026). 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.
About this summary
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 in progress · 27 Feb 2026
Following the publication of the report the Joint Operating Principles known as 'JOPs' Version 3 has been produced and signed off by the tri-services. This document contains additional principles, which can be applied when responding to a Marauding Terrorist Attack. These Joint Operating Principles (JOPs) have been developed from the operational experience of the three services, as well as learning taken from attacks, exercises and wider national learning. The JOP's covers the following areas:- IDENTIFICATION, MOBILISATION, COMMUNICATION, SCENE ASSESSMENT, SHARED SITUATIONAL AWARENESS AND JOINT UNDERSTANDING OF RISK, CASUALTY MANAGEMENT, FIRE AND HAZARDS MANAGEMENT, DE-BRIEFING AND LESSONS IDENTIFIED This was a large piece of work which captured a number of recommendations from the Manchester Arena Inquiry. The JOPS is reviewed on an annual basis to determine its value, additional learning and to ensure it is still relevant.
Earlier statements on delivery (0)
●Cabinet Office · 14 Nov 2025
Following the publication of the report the Joint Operating Principles known as 'JOPs' Version 3 has been produced and signed off by the tri-services. This document contains additional principles, which can be applied when responding to a Marauding Terrorist Attack. These Joint Operating Principles (JOPs) have been developed from the operational experience of the three services, as well as learning taken from attacks, exercises and wider national learning. The JOP's covers the following areas:- IDENTIFICATION, MOBILISATION, COMMUNICATION, SCENE ASSESSMENT, SHARED SITUATIONAL AWARENESS AND JOINT UNDERSTANDING OF RISK, CASUALTY MANAGEMENT, FIRE AND HAZARDS MANAGEMENT, DE-BRIEFING AND LESSONS IDENTIFIED This was a large piece of work which captured a number of recommendations from the Manchester Arena Inquiry. The JOPS is reviewed on an annual basis to determine its value, additional learning and to ensure it is still relevant.
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 →
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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.