Cyber Security and Resilience Bill: how UK businesses can prepare

The ever-expanding nature of the cyber threat landscape continues to impact organisations across the country

This has prompted the UK Government to introduce the Cyber Security and Resilience (Network and Information Systems) Bill. If you’re wondering what the bill is, who it applies to, and how to prepare for its enforcement, PureCyber has the answers to these questions and more in this blog post.

What is the Cyber Security and Resilience Bill and when does it come into effect?

The bill aims to bolster the UK’s cyber defences and provide stronger protection for organisations against the increasingly sophisticated and costly nature of cyber attacks. It also acts as an update for the Network and Information Systems (NIS) Regulations 2018, providing the UK with a more effective and current regulatory framework.

While the bill is currently being passed through parliament and is not yet enforced, it’s expected to come into effect December 2027. However, crucially, reporting responsibilities come into effect from September 2026, meaning early preparation is key.

Who will the bill apply to?

Any organisation that delivers, supports, or enables the UK’s essential services and digital infrastructure will be impacted, alongside managed service providers and even supply chains, indirectly.

Existing Operators of Essential Services (OES):

• Energy

• Transport

• Finance

• Healthcare

• Water

• Digital Infrastructure

Additional Organisations brought into scope:

• Data Centre & Digital Infrastructure Operators

• Large Load controllers

• Managed Service Providers

• Designated critical suppliers

Indirect Impact (Supply Chain)

Organisations that rely on third-party IT providers or critical suppliers are likely to face:

• increased due diligence requirements,

• contractual changes,

• and stronger expectations around supply-chain cyber assurance.

What are the bill’s requirements?

The three main aspects that UK businesses must prepare for are:

Enhanced cyber security obligations

“Organisations must implement appropriate and proportionate technical and organisational security measures to manage cyber security risks and improve resilience.”

Essentially, any of the businesses listed above must prove that they have effective measures in place that both manage the cyber security risks your business faces and minimise disruption during and after an attack or data breach.

Incident Reporting

“Organisations must implement incident reporting processes. Timely reporting is essential with the initial notification within 24 hours and a full report required within 72 hours, both to relevant regulators and the National Cyber Security Centre (NCSC).”

When responding to an incident, a clear chain of command and appropriate response are key. Do you know an incident’s impact and who is affected by it? Have you clearly communicated to relevant parties what’s happening, and do you know who can give you the information you need to accurately report on what’s happening?

Supply Chain Assurance

“Organisations need to have oversight of their supply chain, ensuring suppliers must meet minimum security standards and identify critical suppliers.”

Bringing in third-party suppliers and vendors and giving them access to critical systems without strict security measures in place can lead to reduced visibility, less control, reputational damage and disruption. Are your supply chain security policies effective in maintaining your security posture, or is more required from them to protect your business?

How your business can prepare

The first step to establishing what’s required prior to the bill coming into effect is to understand your exposure. Establish whether the bill applies directly to your organisation, or if its requirements are mandated by customers, partners or regulatory obligations.

If you fall into the former category, then there are three essential actions that need to be taken, beginning with assessing your cyber maturity. Review if your business or organisation has:

• Information Security Policies

• Risk Assessments and Risk Management Processes

• Appropriate security controls

• Incident Response, Recovery and Reporting Processes

• Supplier Assurance and Due Diligence processes

• Clearly defined roles and responsibilities

Following that, review your incident management processes. Make sure that incident identification, escalation, and reporting procedures align with the proposed reporting requirements, as outlined above.

Finally, strengthen your supply chain assurance. Review your current supplier management processes, and then identify your current critical suppliers to confirm what risks are involved. Once those cyber security risks have been identified, implement consistent due diligence processes to ensure both current and future suppliers.

Don’t worry – we’re here to help

If any of the details we’ve explained above feel overwhelming or you’re unclear on how to proceed with preparing for the Cyber Security and Resilience Bill, help is at hand. PureCyber’s expert Governance, Compliance and Risks professionals can help with guidance and practical advice to help you to prepare for and implement the measures your business needs.

We do that by:

• Assessing the applicability of the Bill and outlining compliance obligations.

• Conducting a Governance Audit to assess the current cyber posture and identify any gaps.

• Reviewing or implementing policies, procedures and documentation to align with the legislation.

• Assessing supply chain assurance processes or managing an organisation's supply chain.

Our team is well-versed in ensuring organisations maintain effective governance across a range of certifications, including ISO, CAF and more Government-based standards, and is ready and waiting to assist you.

Contact us today and let’s ensure you’re prepared and ready for the Cyber Security and Resilience Bill.