The ICL Inquiry

Completed

ICL Inquiry

Chair Lord Gill Judge / Judiciary
Established 27 Apr 2009
Final Report 16 Jul 2009
Commissioned by Scottish Government

Inquiry into the Stockline Plastics factory explosion in Glasgow on 11 May 2004 which killed 9 workers. Found that corroded LPG pipework caused the explosion. Described as "short, sharp and hard-hitting" - completed in 13 months at £1.9m cost.

Evidence & Impact
The ICL Inquiry was established in April 2009 following an explosion at ICL Plastics Ltd in Glasgow that killed nine people and injured 33. Lord Gill's inquiry examined the causes of the explosion and made recommendations to prevent similar incidents. The inquiry published its final report in December 2016, making seven recommendations focused on improving LPG safety.

The government's response, published in Command Paper 7849, accepted five recommendations fully, one in principle, and rejected one. The key recommendation for replacing buried metallic LPG service pipes was accepted, with HSE tasked to implement a nationwide programme targeting up to 40,000 premises. Higher-risk premises were scheduled for completion by end 2013, with all industrial and commercial premises by 2015.

The government rejected the recommendation for mandatory independent audits of all workplace risk assessments, citing 78% stakeholder opposition and stating that other proposed measures for LPG installations made independent audit unnecessary. The recommendation for an accredited registration scheme for LPG suppliers was accepted in principle, with 70% stakeholder support, though the government sought further consultation on implementation options.

According to HSE confirmation dated December 2015, all buried metallic LPG service pipe replacements were completed by the 2015 deadline. The same update indicates completion status for all seven recommendations, though specific details of implementation for recommendations beyond the pipe replacement programme are not provided in the available evidence.

Other documented actions include HSE's development of web-based guidance for LPG users, establishment of regular communication channels between HSE and industry bodies, and HSE-funded research into polyethylene piping safety. The evidence suggests a focus on improving guidance, compliance and enforcement within the existing legislative framework rather than introducing new legislation.
Reforms Attributed to This Inquiry
- HSE implemented nationwide programme for replacement of buried metallic LPG service pipes at industrial and commercial premises, with completion reported by 2015
- HSE developed web-based guidance for LPG users on meeting statutory obligations
- Strengthened installation record requirements and supplier asset registers for LPG installations
- Enhanced communication channels established between HSE, UKLPG and industry stakeholders through regular meetings and working groups
- HSE funded research into polyethylene piping safety and published guidance for domestic LPG customers
AI-generated narrative. Generated 26 Mar 2026 using claude-opus-4. Assessment is indicative, not authoritative.
2 months Duration
£1.9m Total Cost
Government Response

Total Recommendations 7
Data last updated: 31 Dec 2015 · Source
Data verified: 6 Feb 2026 (Claude)
How to read this

Government Response tracks what the government said it would do (accepted, rejected, etc.).

Full methodology

1 question since Dec 2025
Written Question ICL Inquiry
Simon Hoare (Conservative)
02 Dec 2025
18 Dec 2008
Inquiry Announced
27 Apr 2009
Inquiry Established
17 Dec 2016
Final Report Published

Recommendations (5)

ICL-1
Accepted
Replace Buried Metallic LPG Pipes
Recommendation

An urgent programme of replacement of buried metallic LPG pipework with polyethylene piping should be implemented.

Health and Safety Executive · 18 Mar 2010 Accepted
The Government recognises that corrosion of the underground metallic service pipe supplying the factory was the key factor that contributed to the explosion at ICL Plastics Ltd and agrees with Lord Gill that there should be a programme of replacement of such pipework in industrial and commercial premises. HSE working with UKLPG on prioritised replacement programme covering up to 40,000 premises. Higher-risk premises by end of 2013, all industrial and commercial premises by 2015. (Cm. 7849, paras 6-8)
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Health and Safety Executive (Primary)
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ICL-2
Accepted
New LPG Safety Regime
Recommendation

A new safety regime should be put in place governing the installation, maintenance, monitoring and replacement of all LPG systems.

Health and Safety Executive · 18 Mar 2010 Accepted
A key theme that emerged from stakeholders was the view that the existing legislative framework already allows for Lord Gill's objectives to be achieved providing that it is supported by improved guidance, compliance and enforcement. The Government agrees with this view but recognises the need to ensure that dutyholders are aware of their legal duties. HSE asked to consult further on installation records (84% stakeholder support) and supplier asset registers (93% support). No formal verification scheme instituted. (Cm. 7849, paras 18-25)
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Health and Safety Executive (Primary)
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ICL-5
Accepted
Polyethylene Piping Research
Recommendation

Research into the safety of polyethylene piping should be conducted to ensure long-term reliability.

Health and Safety Executive · 18 Mar 2010 Accepted
The Government accepts this recommendation. We must have sufficient knowledge about the replacement material to be confident that a similar situation will not arise again. HSE will review the natural gas programme and identify any possible gaps. If additional research work is needed to ensure the results can be applied to LPG then this will be taken forward by HSE. HSE to consult with IGEM, UKLPG and PE pipe manufacturers on appropriate integrity tests. (Cm. 7849, paras 39-42)
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Health and Safety Executive (Primary)
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ICL-6
Accepted
LPG Safety Communications
Recommendation

There should be prompt and effective communication between all interested parties of all technical developments in matters of LPG safety.

Health and Safety Executive · 18 Mar 2010 Accepted
The Government agrees with Lord Gill that effective communication is vitally important to ensuring the continuing safety of small bulk LPG installations. There have been significant efforts between HSE and UKLPG to establish strong communication channels including regular meetings between senior representatives and working groups to address specific issues. Communication between these parties has already significantly increased. (Cm. 7849, paras 43-44)
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Health and Safety Executive (Primary)
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ICL-7
Accepted
Legal Responsibility Awareness
Recommendation

Awareness of legal responsibilities should be raised among LPG suppliers and consumers.

Health and Safety Executive · 18 Mar 2010 Accepted
We accept Lord Gill's recommendation that HSE should, in consultation with UKLPG, prepare practical advice for LPG users regarding the fulfilment of their statutory duties. Improved access to practical advice can contribute significantly to improving compliance with existing obligations. HSE has been working with UKLPG to develop a web-based source for LPG users on meeting their obligations. (Cm. 7849, para 44)
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Health and Safety Executive (Primary)
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