Understand the Cyber Security and Resilience Bill (CSRB)
What it means. Who it affects. How to stay compliant.
What is the Cyber Security and Resilience Bill?
The Cyber Security and Resilience Bill (CSRB) marks the UK's most comprehensive update to cyber legislation in over a decade. Set to come into force in 2025, CSRB significantly expands the scope of existing NIS regulations to include managed service providers, cloud platforms, and data centres - sectors that underpin the UK's digital economy.
Mandatory incident reporting
Stronger regulatory oversight
Tougher compliance standards
Organisations delivering essential or digital services will be expected to proactively manage cyber risk, including throughout their supply chains. Failing to comply may result in financial penalties, operational disruption, and reputational harm.
Now is the time to assess your readiness. CSRB will reshape how UK businesses approach resilience, compliance, and security - and inaction is no longer an option.
Who's Affected
CSRB significantly expands the scope of organisations required to comply with cybersecurity regulations. Is your organisation on this list?
Managed Service Providers (MSPs)
MSPs with access to client networks and IT systems now face regulatory oversight.
Cloud Service Providers
Cloud platforms that host essential data or services must meet new cyber standards.
Data Centres
Third-party and enterprise data centres above capacity thresholds fall in scope.
Public Services
Councils, departments, and local authorities must comply with stricter resilience rules.
NHS Organisations
Hospitals and NHS-affiliated trusts are core targets for CSRB due to recent attacks.
SMEs with Critical Supply Chain Roles
Even small businesses may be regulated if they support essential digital infrastructure.
Key Changes
CSRB introduces several major reforms to the UK's cybersecurity landscape. Here's what you need to know:
Bringing More Organisations Into the Frame
The Bill significantly expands who must comply with cyber regulations by bringing Managed Service Providers (MSPs) and other digital support firms into scope. These companies often have deep access into client systems, making them prime targets for attackers - and vital links in protecting the UK's digital backbone. Previously outside of regulatory reach, these providers will now be treated as Relevant Digital Service Providers, subject to security standards and oversight from the Information Commissioner's Office (ICO). With an estimated 900–1,100 MSPs now covered, the legislation closes a major gap in the UK's cyber defence chain.
Need help preparing?
Our compliance team can guide you through the new requirements
Talk to our compliance teamBringing More Organisations Into the Frame
The Bill significantly expands who must comply with cyber regulations by bringing Managed Service Providers (MSPs) and other digital support firms into scope. These companies often have deep access into client systems, making them prime targets for attackers - and vital links in protecting the UK's digital backbone. Previously outside of regulatory reach, these providers will now be treated as Relevant Digital Service Providers, subject to security standards and oversight from the Information Commissioner's Office (ICO). With an estimated 900–1,100 MSPs now covered, the legislation closes a major gap in the UK's cyber defence chain.
Need help preparing for these changes?
Our compliance team can guide you through the new requirements
Compliance Challenges
What It Takes to Stay Secure - and Within the Law
The Cyber Security and Resilience Bill introduces ambitious new standards for digital resilience across the UK. Compliance isn't just ticking a box - it's a shift in how organisations govern, secure, and audit their digital infrastructure. Meeting these standards will demand clear governance, technical maturity, and operational discipline.
Key Requirements
Real-Time Threat Response
Notify regulators and the NCSC of major incidents within 24 hours, followed by detailed reporting within 72.
Formal Risk Frameworks
Mandate adoption of the NCSC Cyber Assessment Framework (CAF) with ongoing documentation and alignment.
Supply Chain Vigilance
Implement contractual and technical controls to manage supplier risk end-to-end.
Independent Validation
Undergo regular third-party audits and penetration tests to verify cyber defences.
On-Site Enforcement
Prepare for regulator inspections, with potential enforcement action for non-compliance.
Ready for CSRB?
Many organisations will need to overhaul their cyber policies, documentation, and infrastructure to comply. Can you demonstrate secure supply chains, respond to threats in real-time, and pass regulatory scrutiny?
Get a Readiness Assessment →
How Precursor Security Can Help
Our tailored solutions ensure your organisation stays compliant with the Cyber Security and Resilience Bill while strengthening your overall security posture.
24/7 Threat Detection & Response
Security Operations Centre
Our UK-based CREST-accredited SOC provides always-on monitoring and rapid incident response, helping you meet CSRB's 24-hour notification requirements for cyber incidents.
Learn MoreIdentify Weaknesses Before Attackers Do
Penetration Testing
Our certified ethical hackers simulate sophisticated attacks to uncover vulnerabilities across your digital estate, satisfying CSRB's independent validation requirements.
Learn MoreAudit-Ready Cyber Assurance
Compliance
Stay ahead of CSRB with our compliance assessments, including NIS audits, Cyber Essentials & Plus certifications, and NCSC CAF implementation support.
Learn MoreImplementation Timeline
Key milestones in the Cyber Security Resilience Bill's journey from announcement to enforcement.
17 July 2024
CSRB announced during the State Opening of Parliament
The Labour government commits to strengthening UK cyber security through new legislation.
17 July 2024
CSRB announced during the State Opening of Parliament
The Labour government commits to strengthening UK cyber security through new legislation.
November 2024
Stakeholder engagement and consultation begins
Discussions with industry and regulators on scope, reporting, and regulatory powers.
November 2024
Stakeholder engagement and consultation begins
Discussions with industry and regulators on scope, reporting, and regulatory powers.
1 April 2025
CSRB Policy Statement published
Government outlines planned measures and legislative intent, including MSPs, data centres, and reporting mandates.
1 April 2025
CSRB Policy Statement published
Government outlines planned measures and legislative intent, including MSPs, data centres, and reporting mandates.
Mid–2025 (expected)
First Reading in Parliament
The Bill is formally introduced and begins its legislative journey.
Mid–2025 (expected)
First Reading in Parliament
The Bill is formally introduced and begins its legislative journey.
Late 2025 / Early 2026
Royal Assent + Enforcement Phase
CSRB becomes law; organisations must begin complying with new requirements.
Late 2025 / Early 2026
Royal Assent + Enforcement Phase
CSRB becomes law; organisations must begin complying with new requirements.
17 July 2024
CSRB announced during the State Opening of Parliament
The Labour government commits to strengthening UK cyber security through new legislation.
17 July 2024
CSRB announced during the State Opening of Parliament
The Labour government commits to strengthening UK cyber security through new legislation.
November 2024
Stakeholder engagement and consultation begins
Discussions with industry and regulators on scope, reporting, and regulatory powers.
November 2024
Stakeholder engagement and consultation begins
Discussions with industry and regulators on scope, reporting, and regulatory powers.
1 April 2025
CSRB Policy Statement published
Government outlines planned measures and legislative intent, including MSPs, data centres, and reporting mandates.
1 April 2025
CSRB Policy Statement published
Government outlines planned measures and legislative intent, including MSPs, data centres, and reporting mandates.
Mid–2025 (expected)
First Reading in Parliament
The Bill is formally introduced and begins its legislative journey.
Mid–2025 (expected)
First Reading in Parliament
The Bill is formally introduced and begins its legislative journey.
Late 2025 / Early 2026
Royal Assent + Enforcement Phase
CSRB becomes law; organisations must begin complying with new requirements.
Late 2025 / Early 2026
Royal Assent + Enforcement Phase
CSRB becomes law; organisations must begin complying with new requirements.
Ready to Secure Your Future?
Book a free consultation with our CSRB experts and discover how we can help your organisation achieve compliance while strengthening your cyber resilience.
What You'll Get
Personalised CSRB Assessment
Understand exactly how CSRB affects your organisation
Compliance Roadmap
Clear next steps to achieve and maintain compliance
Expert Guidance
Direct access to our cybersecurity compliance specialists