Public Inquiry

Manchester Arena Inquiry

Status: Completed Chair: Sir John Saunders Established: Sep 2020 Report: Mar 2023 Commissioned by: Home Office

Public inquiry into the terrorist attack at Manchester Arena on 22 May 2017, which killed 22 people and injured over 1,000 others.

Response breakdown

169 recommendations total
97%
164 (97%)Accepted
5 (3%)Accepted in Part

Evidence & impact

AI-generated · 26 Mar 2026
The Manchester Arena Inquiry was established following the terrorist attack at Manchester Arena on 22 May 2017 that killed 22 people. Sir John Saunders published the final report on 2 March 2023, making 169 recommendations across emergency response, security arrangements, and public safety.

The government accepted 164 recommendations (97%) and accepted 5 in principle (3%). Home Secretary Suella Braverman stated in Parliament on 6 March 2023 that the government would 'carefully consider the report's findings and recommendations in full' and committed to ensuring lessons were learned. A recommendations tracking dashboard was subsequently published.

Progress updates from February 2026 indicate that 78 recommendations (46%) are recorded as completed and 91 (54%) remain in progress. Key developments documented include the publication of Joint Operating Principles Version 3 for responding to terrorist attacks, establishment of a new multi-agency radio control system, and introduction of the Ten Second Triage system for major incidents.

Several working groups and programmes have been established, including the Clinical Response to Major Incidents group and the Stronger Local Resilience Forum trailblazer programme. The Security Industry Authority has worked with the Health and Safety Executive to develop enhanced first aid training incorporating the inquiry's recommendations.

However, multiple recommendations show limited documented progress nearly three years after publication. Several relating to legislative changes, including extending Security Industry Authority licensing and reforms to the Inquiries Act 2005, remain under consideration. The development of a healthcare standard for events, while noted as progressing with research projects complete, is not due for publication until 2026. The Clinical Response to Major Incidents group has revised its timeline to 2027 due to resource constraints.

The Ministry of Justice has stated there are no current plans to increase maximum sentences under the Inquiries Act, despite this being recommended. Various guidance documents and approved professional practices are noted as being developed but have not yet been published according to the available evidence.

Reports & milestones

Reports

Timeline

22 May 2017 Manchester Arena … Terrorist attack at Manchester Arena killed 22 people.
22 Oct 2019 Inquiry Announced Home Secretary announced a public inquiry. · Source
22 Oct 2019 Chair Appointed Sir John Saunders appointed as Chair.
07 Sep 2020 Hearings Begin Public hearings commenced.
17 Jun 2021 Volume 1 Published Volume 1 report on security published. · Source
03 Nov 2022 Volume 2 Published Volume 2 report on emergency response published. · Source
02 Mar 2023 Volume 3 Published Final volume on radicalisation of the attacker published. · Source
08 Jun 2023 Government Respon… Government published response accepting recommendations. · Source

Recommendations

5 shown (filtered)
Clear
Code Recommendation Addressed to Response
MAI-48
It is recommended that consideration be given to the creation of statutory powers under section 36 that can be used to prevent …
Accepted in Part View →
MAI-56
It is recommended that the Home Office give consideration to addressing the difficulties in extradition in relation to an offence under section …
Home Office Accepted in Part View →
MAI-57
It is recommended that the Ministry of Justice give consideration to amending section 21 of the 2005 Act to include the express …
Accepted in Part View →
MAI-58
It is recommended that the Ministry of Justice, possibly in conjunction with the Law Commission, give consideration to amending section 36 of …
Accepted in Part View →
MAI-121
The Department of Health and Social Care together with the Care Quality Commission should consider what the consequences of breaching the appropriate …
Department of Health and Social Care Accepted in Part View →

Parliamentary activity

50 mentions since Sep 2020
2 debates 28 questions 16 statements
02 Jun 2026 Written Question Care Quality Commission
Lord Kamall (Conservative)
16 Apr 2026 Early Day Motion Mountain rescue in Cumbria
Tim Farron (Liberal Democrat)
10 Apr 2026 Written Question Athletes: Health Services
Dame Caroline Dinenage (Conservative)
13 Mar 2026 Written Question Health Professions: Culture and Sports
Dame Caroline Dinenage (Conservative)
13 Mar 2026 Written Question Sports: Care Quality Commission
Dame Caroline Dinenage (Conservative)
View all 50 mentions →

Costs

Total: £36,323,455
Period Total Inquiry legal CP legal Source
Aug 2023 £433,226 £161,032 £50,193 link
Aug 2023 (cum.) £36,323,455 £12,933,544 £12,025,040 link
Mar 2023 £2,900,968 £1,518,494 £169,977 link
Mar 2022 £13,359,502 £4,525,677 £4,421,346 link
Mar 2021 £15,871,460 £4,700,572 £6,326,137 link
Mar 2020 £3,758,299 £2,027,769 £1,057,387 link