UK Statutory Instrument 2015 United Kingdom

Control of Major Accident Hazards Regulations 2015

At a glance

Enforced by

HSE, Environment Agency, ONR, NRW, ORR, SEPA

What's here

23 compliance obligations, 18 practical guides across 2 topics · 1 journey

Penalty landscape

4 of 23 obligations carry up to 2 years imprisonment. 3 carry different penalties and 16 have no criminal penalty — flagged in the list below.

Who this Act binds

Business-side actors with duties under this Act, ranked by how often they appear.

  • Operator 15
  • Occupier 2
  • Any Person 1

Plus 5 non-business duties on Crown ministers, regulators, local authorities or tribunals — shown collapsed under each section below.

Step-by-step journeys using this legislation

Walkthroughs that take you from a real business situation to compliance.

Relevant guidance

Practical guides for businesses affected by this Act, ordered by how closely they engage with it.

Direct — cites this Act

1 guides

Other Acts binding the same actors

For each actor bound by this Act, the other UK Acts that bind them most often. Useful for understanding the full compliance landscape facing each role.

Operators also bound by 125 other Acts (top 5 shown)
Occupiers also bound by 101 other Acts (top 5 shown)
Any Person also bound by 749 other Acts (top 5 shown)

What this Act requires

Sections that create concrete duties on businesses or carry penalties. Procedural and definitional sections are folded into the “Browse other sections” expander at the bottom of each group. Click any section title to read the source text on legislation.gov.uk.

Part 1 — INTRODUCTION

Browse 4 other sections in this Part — procedural / definitional / commencement

Part 2 — GENERAL DUTIES OF OPERATORS OF ALL ESTABLISHMENTS

s.006

Notifications

  • Notify the competent authority about hazardous substance sites Operator
Browse 1 other section in this Part — procedural / definitional / commencement

Part 3 — SAFETY REPORTS FOR UPPER TIER ESTABLISHMENTS

Browse 1 other section in this Part — procedural / definitional / commencement

Part 4 — EMERGENCY PLANS FOR UPPER TIER ESTABLISHMENTS

Browse 1 other section in this Part — procedural / definitional / commencement

Part 5 — INFORMATION

s.020

Trans-boundary consequences

Other duties (1) — Crown / regulator
  • Competent authority must share safety info with potentially affected countries Statutory regulator
Browse 2 other sections in this Part — procedural / definitional / commencement

Part 6 — FUNCTIONS OF THE COMPETENT AUTHORITY

s.025

Inspections and investigations

Other duties (1) — Crown / regulator
  • Competent authority must conduct systematic inspections and investigations Statutory regulator
Browse 1 other section in this Part — procedural / definitional / commencement

Part 7 — ACTION TO BE TAKEN FOLLOWING A MAJOR ACCIDENT

Part 8 — ENFORCEMENT AND PENALTIES

Part 9 — FEES

Part 10 — CONSEQUENTIAL AMENDMENTS, REVOCATIONS, SAVING AND TRANSITIONAL PROVISIONS

Browse 4 other sections in this Part — procedural / definitional / commencement

Part 11 — REVIEW

s.034

Review

Other duties (1) — Crown / regulator
  • Secretary of State must review and report on COMAH Regulations every five years Crown / Minister / Government department

Schedules

Browse 3 other Schedules — structural / supplementary

Official guidance

Authoritative sources published by regulators or government explaining this legislation.

Enforcement and responsible bodies

The regulators that administer or enforce this legislation.

HSE

Primary

Health and Safety Executive

Workplace health, safety, and welfare regulation across all industries. Enforces the Health and Safety at Work Act 1974 and related regulations. Investigates …

Environmental protection in England. Regulates waste, emissions, water quality, flood risk, and environmental permits for industrial activities. Enforces environmental law and issues …

ONR

Office for Nuclear Regulation

Independent regulator for nuclear safety and security. Issues nuclear site licences. Regulates nuclear installations, transport, and safeguards.

NRW

Natural Resources Wales

Principal environmental regulator for Wales. Combines functions of Environment Agency Wales, Countryside Council for Wales, and Forestry Commission Wales. Issues environmental permits, …

ORR

Office of Rail and Road

Independent safety and economic regulator for Britain's railways. Regulates health and safety for the mainline rail network, London Underground, light rail, trams, …

Scottish Environment Protection Agency

Scotland's principal environmental regulator. Protects and improves Scotland's environment. Issues environmental permits for waste, emissions, water abstraction, and radioactive substances. Enforces environmental …

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Browse legislation

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Regulators

Learn more about the bodies that enforce this legislation.