Is ISO 45001 certification a legal requirement?

No. ISO 45001 certification is voluntary. However, it helps organisations demonstrate compliance with national health and safety legislation, win contracts that require certified management systems, satisfy client and supply chain requirements, and reduce the risk of HSE enforcement action.

What did ISO 45001 replace?

ISO 45001:2018 replaced BS OHSAS 18001 as the international standard for occupational health and safety management. OHSAS 18001 was withdrawn in March 2021, and all organisations previously certified to OHSAS 18001 needed to transition to ISO 45001.

What is the difference between ISO 45001 and OHSAS 18001?

ISO 45001 follows the Annex SL high-level structure (shared with ISO 9001 and ISO 14001), places greater emphasis on leadership and worker participation, requires analysis of organisational context and interested parties, and takes a risk and opportunity-based approach. OHSAS 18001 was a specification, not a full international standard.

How long does ISO 45001 implementation take?

Implementation timescales vary depending on the size and complexity of the organisation, the maturity of existing OH&S arrangements, and the resources available. Typical implementation takes 6–12 months for SMEs and 12–18 months for larger or multi-site organisations.

What is the Plan-Do-Check-Act (PDCA) cycle?

The PDCA cycle is the management methodology underpinning ISO 45001. Plan: establish OH&S policy, objectives, and processes. Do: implement the processes. Check: monitor, measure, and evaluate performance. Act: take action to improve. It drives continual improvement in OH&S performance.

Can ISO 45001 be integrated with ISO 9001 and ISO 14001?

Yes. ISO 45001 uses the same Annex SL high-level structure as ISO 9001 (Quality) and ISO 14001 (Environmental). This makes integration straightforward, allowing organisations to run an Integrated Management System (IMS) with shared processes, documentation, and audits.

What is an ISO 45001 gap analysis?

A gap analysis compares your organisation's current OH&S arrangements against the requirements of ISO 45001:2018, clause by clause. It identifies what you already have in place, where the gaps are, and provides a prioritised action plan to achieve certification readiness.

How much does ISO 45001 certification cost?

The cost depends on the size and complexity of the organisation, the number of sites, the maturity of existing OH&S systems, and the chosen certification body. Costs typically include consultancy support, training, and certification body fees. Arinite provides transparent, fixed-fee ISO 45001 consultancy packages.

Do I need ISO 45001 to win tenders?

Increasingly, yes. Many public sector contracts, major construction projects, and large corporate supply chains now require or strongly prefer ISO 45001 certification as evidence of a robust OH&S management system. Some prequalification schemes (e.g. PQQ, Achilles) recognise ISO 45001 as meeting their health and safety requirements.

What is worker participation in ISO 45001?

ISO 45001 places significant emphasis on worker consultation and participation in OH&S decision-making. This includes involving workers in hazard identification, risk assessment, setting OH&S objectives, incident investigation, and the development of OH&S policies and procedures.

HSE inspections up 47% - HSE carried out over 13,200 workplace inspections in 2024/25.

ISO 45001 Consultants

ISO 45001
Certification & Consultancy

Gap Analysis · Implementation · Internal Audit · OHSAS 18001 Transition

ISO 45001:2018 gap analysis, implementation support, internal audits, and certification preparation. IOSH Chartered consultants helping you build and certify your occupational health and safety management system.

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ISO 45001:2018

Annex SL Aligned

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Free Health & Safety Gap Analysis

30-minute Compliance Call Valued at £750+

What Happens on Your Free Gap Analysis Call:

1.30-minute consultation
2.We review your current H&S arrangements
3.We identify 1-10 critical compliance gaps you're missing

No Card Details Required

Free Arinite factsheet (tailored to your gaps)

Honest recommendation (audit needed or not)

Identify 1+ gaps, or you receive a £50 gift card. Only 20 consultations are available every month.

ISO 45001:2018

ISO 45001:2018 is the international standard for Occupational Health & Safety (OH&S) management systems, designed to help organisations proactively manage risk, protect workers, and continually improve safety performance. Arinite provides ISO 45001 consultancy and implementation support for organisations operating locally and internationally.

Our IOSH Chartered consultants help you design, implement, and maintain an ISO 45001-aligned management system that is practical, defensible, and ready for certification.

Speak to an ISO 45001 Consultant

What Is ISO 45001

What Is ISO 45001:2018?

ISO 45001:2018 is an internationally recognised standard developed by independent national and international standards bodies, with input from experts in over 70 countries. It provides a structured framework for managing Occupational Health & Safety through a risk-based, continuous improvement approach, aligned with the Plan-Do-Check-Act (PDCA) cycle. ISO 45001 is consistent with International Labour Organization (ILO) conventions and international best practice.

Legal Requirement

Is ISO 45001 a Legal Requirement?

No - ISO 45001 certification is not legally mandatory. However, organisations are legally required to:

Manage workplace Health & Safety risks

Implement suitable arrangements

Demonstrate effective control and review

ISO 45001 provides a formal, internationally recognised framework to help organisations meet and evidence these legal duties.

Importantly:

ISO 45001 does not replace legal compliance; it supports it.

Why Implement

Why Implement ISO 45001?

ISO 45001 is widely adopted by organisations seeking to:

Strengthen Health & Safety governance

Improve consistency across sites and countries

Meet client, tender, and supply-chain requirements

Demonstrate leadership commitment to worker safety

For many businesses, ISO 45001 is a commercial enabler, not just a safety initiative.

Benefits

Benefits of ISO 45001:2018

Demonstrate Compliance & Commitment

Show regulators, clients, and employees that Health & Safety is managed systematically and proactively.

Improve Performance

Embed Health & Safety into day-to-day operations, improving decision-making and reducing incidents.

International Framework

Use a globally recognised standard suitable for multi-site and international operations.

Risk-Based Approach

Identify, assess, and control risks through a structured and repeatable process.

Clear Objectives & Accountability

Set measurable Health & Safety objectives with defined responsibilities and action plans.

Replaces OHSAS 18001

ISO 45001 replaces BS OHSAS 18001, introducing a modern, leadership-driven, PDCA-based system.

Global Operations

ISO 45001 and Global Operations

ISO 45001 is particularly valuable for organisations operating across multiple jurisdictions. Arinite designs ISO 45001 systems that:

Use UK Health & Safety law as a robust baseline, widely regarded as a leading risk-based framework
Align with international best practice
Can be adapted to meet local legal requirements in each country

This allows organisations to maintain consistent governance while remaining locally compliant.

Our Services

Our ISO 45001 Consultancy Services

Arinite provides end-to-end ISO 45001 consultancy, tailored to your organisation's size, risk profile, and geographic footprint.

ISO 45001 Gap Analysis

Review of existing arrangements against ISO 45001 requirements
Identification of gaps and priorities
Clear action plan to achieve alignment

ISO 45001 Implementation Support

Design of OH&S management system
Development of policies, procedures, and processes
Integration with existing management systems (e.g. ISO 9001, ISO 14001)

Who This Is For

Who ISO 45001 Is For

ISO 45001 is suitable for:

Organisations of any size or sector

Multi-site and international businesses

Companies bidding for contracts or frameworks

Organisations seeking formal certification

Businesses seeking to improve safety culture

It is particularly effective when Health & Safety is treated as a core management function rather than an afterthought.

Get Started

Start With a Free ISO 45001 Gap Analysis

If you're unsure how close your organisation is to ISO 45001 compliance, the fastest way to find out is a professional gap analysis.

Book a Free ISO 45001 Gap Analysis Call

Compliance assessment valued at £750+

OUR PROVEN SYSTEM

The Arinite Transformation™

From Reactive Firefighting to Proactive Health & Safety Compliance

STAGE 1

REACTIVE(Where 60% of Businesses Operate)

No formal HSE systems in place. Everything is reactive, waiting for something to go wrong. Documentation is missing or outdated.

Why It's Dangerous:

✗£50K-£150K average fine when (not if) HSE inspects
✗Can't bid on contracts requiring HSE certification
✗One accident away from director prosecution

This isn't just "non-compliant." It's criminally negligent. Directors face personal prosecution.

STAGE 2

COMPLIANCE(Where Most Businesses Stop)

Basic HSE documentation is in place. Minimum legal requirements met. You can pass a basic audit.

Why It's Better (But Not Enough):

✓Legal protection (no fines if inspected)
✓Can bid on contracts requiring certification
✓Pass basic client audits
✗Still reactive (problems arise, then you respond)
✗Compliance maintained by one person (bottleneck)
✗Systems don't run themselves

Compliance is where most consultants get you, then leave. You're legal, but you're not optimised.

STAGE 3

PROACTIVE(Where Arinite Clients Operate)

Systems run proactively, preventing problems before they occur. Compliance is distributed, not dependent on one person.

Why It's Transformational:

✓Win more contracts (HSE certification opens doors)
✓Save 20+ hours/week (systems run themselves)
✓Peace of mind (sleep soundly, without the fear of prosecution)
✓Focus on your core business while we handle compliance

That's why 95%+ of clients renew year after year.

The Arinite Difference:

”

Robert Winsloe

Managing Director, Arinite

“We work with you to deliver peace of mind. We tailor our service provision to your business to provide proactive, pragmatic health and safety advice and that helps reduce costs by ensuring compliance with relevant health and safety legislation.”

Other Consultants

Get you to Stage 2 (Compliant) and disappear.

Arinite

Gets you to Stage 3 (Proactive) and keeps you there.

That's why we call it transformation, not just compliance.

CONSULTANTS + SOFTWARE

Where Health and Safety Consultants
Meet Compliance Software.
Globally.

Health & Safety Consultants+EHS Software+Arinite AI

Consultants+EHS Software+Arinite AI

Traditional consultancies audit, report, and leave. You get a document and the job of implementing it.

Software companies give you dashboards and workflows, but no expertise. The platform stores whatever you put in it - Bad data in, Bad data out.

Arinite exists because global businesses need consultants who know compliance in every jurisdiction, and technology that proves it in real time.

We are not a consultancy that added software. We are not a software company that recommends consultants.

We are the place where those two things finally became one.

HOW IT WORKS

From Hidden Health and Safety Gaps to Clarity

Step 1

Free Health and Safety Gap Analysis Call

Identify what's missing before an inspector does.

A focused 30-minute health and safety assessment to expose weaknesses in your current arrangements.

What you get:

Clear identification of compliance gaps that inspectors commonly enforce

Straight answers on where you stand legally and local laws

A tailored pack of free Arinite Factsheets covering your specific gaps

→

You leave knowing exactly where you're exposed and what to do about it.

Step 2

Health and Safety Audit and Inspection

Turn risk into documented compliance, fast.

A health and safety consultant will conduct a comprehensive H&S audit and inspection of your workplace.

What's included:

On-site or virtual compliance audit of all health and safety activities and areas

Health and Safety risk assessments with a prioritised action plan with clear timelines

A comprehensive health and safety audit report (typically 40+ pages)

→

You move from exposed to defensible with evidence to prove it.

Step 3

Outsource Your Health & Safety — The Arinite Partnership

We become your health and safety experts. Your competent person.

You focus on your core day-to-day business, Arinite's Health and Safety consultants handle the rest.

What we take ownership of:

Legal appointment as your health and safety competent person

Creation of all required health and safety policies, procedures, and records

Implementation of health and safety management systems and compliance software

→

Compliance handled. Risk controlled. Directors protected.

GLOBAL LOCATIONS

Global Health and Safety Consultants.
International Compliance, Local Delivery.

50+ Countries. Global Safety. Local Trust.

50+ Countries

Looking for health and safety consultants near you? With Chartered consultants based across the UK and locally qualified professionals in 50+ countries, Arinite provides health and safety support wherever your offices are. Whether you need an on-site audit in London, a fire risk assessment in Manchester, or international health and safety assessments across multiple jurisdictions, we have consultants near you.

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Everything You Need to Know

About Health and Safety Consultancy, Compliance Software, and Working With Arinite

Still Have Questions About Health & Safety Compliance?

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Get in Touch Call: +44 (0)20 7947 9581