Recommendation P2-40: Amend BS 750 for flow coefficient measurement
From Grenfell Tower Inquiry: Phase 2 Report, published 4 September 2024.
Recommendation
We therefore recommend that the British Standards Institution amend BS 750 to include a description of the circumstances under which the flow coefficient to which it refers in paragraph 10.2 is to be measured. (113.64)
In brief (written by this site)
The Ministry of Housing, Communities and Local Government reported in September 2026 that the recommendation was complete and fully discharged following the publication of the amended BS 750 standard on 11 August, which included the Inquiry's recommended description for flow coefficient measurement (Ministry of Housing, Communities and Local Government, Sep 2026; Ministry of Housing, Communities and Local Government, Sep 2026). The department had previously noted in February 2026 that a drafting panel had completed the consultation draft, with publication anticipated in the first quarter of that year (Ministry of Housing, Communities and Local Government, Feb 2026). The British Standards Institution had accepted the recommendation in February 2025, initially expecting to publish the revised standard towards the end of 2025 (The British Standards Institution response, Feb 2025).
Sources
AI-generated summary of the record on this page, checked by a second model and automatic checks, 26 Sep 2026. The record below is the sources' own words.
Government response
The British Standards Institution (BSI) accepts this recommendation. It will amend BS 750 accordingly and expect to publish the revised standard, following the usual standards development process and a period of public consultation, towards the end of 2025.
How this response relates to the recommendation
Site note: This is the government's response to the Phase 2 report (CP 1248, published 26 February 2025). It prints each recommendation and then the response to it. Where the recommendation is addressed to a body outside government, the response prints that body's own acceptance (the Architects Registration Board and RIBA, HMICFRS, London Fire Brigade, the National Fire Chiefs Council, the British Standards Institution, the National Police Chiefs' Council), and the row is filed under that body.
Delivery
Ministry of Housing, Communities and Local Government says completed (10 September 2026)
Timeline for delivery
2026
- Public consultation on draft amendments to BS 750 to begin. – Complete
- Closure of public consultation on draft amendments to BS 750. – Complete
- Updated BS 750 to be published. – (Complete)
Site note: This is the Ministry of Housing, Communities and Local Government's progress report of September 2026 on the Grenfell Tower Inquiry recommendations. Where the passage describes work by another body, such as the National Fire Chiefs Council, London Fire Brigade, fire and rescue services, the British Standards Institution or the Cabinet Office, it is the Ministry's account of that body's progress, and the row is filed under the Ministry.
Earlier statements on delivery (2)
Ministry of Housing, Communities and Local Government (10 September 2026)
The draft text of the amendment was issued for public consultation on 13 February and the consultation period closed on 13 April. The drafting panel then reviewed and addressed all comments received. The final text was approved by the responsible technical committee (FSH/17 Fire and rescue service equipment) and the amendment was published on 11 August. The updated text includes the description of the circumstances under which the flow coefficient to which it refers in paragraph 10.2 is to be measured recommended by the Inquiry report as well as some other changes identified during the amendment process.
This recommendation is now complete and has been fully discharged.
Site note: This is the Ministry of Housing, Communities and Local Government's progress report of September 2026 on the Grenfell Tower Inquiry recommendations. Where the passage describes work by another body, such as the National Fire Chiefs Council, London Fire Brigade, fire and rescue services, the British Standards Institution or the Cabinet Office, it is the Ministry's account of that body's progress, and the row is filed under the Ministry.
Ministry of Housing, Communities and Local Government (25 February 2026)
Work to revise the standard began with a panel of experts brought together to take the recommendation forward, as published in our May 2025 progress report. The recommendation was formally accepted, and during early discussions the panel also agreed to make some additional, unrelated changes on the proposed scope to the standard. The British Standards Institution’s Content Development team began meeting with the panel to start drafting revised wording and to agree a likely timetable for issuing a draft for public consultation.
As work progressed, approval was secured for the internal business case to amend the standard. With this in place, a drafting panel was formed, and began developing a draft version of the revised standard for consultation.
By the end of 2025, the panel had completed the consultation draft and publication was expected shortly. Subject to the volume and nature of consultation responses, the amended standard is expected to be published in the first quarter of 2026.
Site note: This is the annex of the government's Phase 2 annual report (CP 1512, published 25 February 2026) as GOV.UK publishes it, one page per theme: the Ministry of Housing, Communities and Local Government's account. Where the passage describes work by another body, such as the National Fire Chiefs Council, London Fire Brigade, the British Standards Institution, the Health and Safety Executive or the Cabinet Office, it is the report's account of that body's progress, and the row is filed under the Ministry. The status is what the passage says: completed only where it says the recommendation is complete or closed.
Responsible bodies
Themes and tags
Who has spoken
- British Standards Institution
Response - Ministry of Housing, Communities and Local Government
Delivery statement