The UK’s proposed reform of its cybersecurity regime signals a material shift in how the Government expects organisations to manage digital operational risk. While the immediate legal obligations are likely to focus on entities operating in or supplying critical and important services, the consequences will extend through supply chains, outsourced IT arrangements and cyber-insurance underwriting.
For UK SMEs, the practical question is not simply, “Will the new law apply directly to us?” It is: can we demonstrate that our business is a credible, resilient supplier and a manageable cyber-insurance risk?
White & Case’s analysis points to incoming reform in the UK cybersecurity framework, following the Government’s policy direction on improving cyber resilience. The anticipated changes are widely associated with the proposed Cyber Security and Resilience Bill, which builds on the Network and Information Systems Regulations 2018 (the NIS Regulations). The policy objective is to update a regime designed for a more limited set of essential services, reflecting today’s dependence on managed IT, cloud platforms, data centres and connected supply chains.
Many small and medium-sized businesses will not be classified as operators of essential services. A local accountancy practice, ecommerce retailer, recruitment firm or manufacturer may therefore assume that cyber regulation is someone else’s problem. That would be a costly interpretation.
Supply-chain scrutiny will become more demanding
Larger organisations that are directly regulated, including those in sectors such as energy, transport, health and digital infrastructure, need reliable suppliers. If they are expected to manage cyber risk more rigorously, they will pass questions down the chain.
An SME providing software development, payroll processing, marketing technology, IT support, engineering services or business-process outsourcing could increasingly be asked to provide evidence of:
- Multi-factor authentication (MFA) for email, remote access and administrator accounts;
- A tested incident-response plan;
- Secure backup and recovery arrangements;
- Vulnerability and patch-management processes;
- Staff cyber-awareness training;
- Controls over subcontractors and third-party software;
- Appropriate cyber-insurance cover.
These requests are already common in better-developed procurement processes. Reform is likely to make them more routine and less negotiable. For an SME, failing a security questionnaire can mean losing a renewal, being excluded from a tender, or accepting contractual liability that its current insurance does not cover.
Managed service providers are under particular pressure
The direction of travel is especially significant for managed service providers (MSPs), managed security service providers and other firms with privileged access to clients’ systems. An MSP can become the route through which one incident affects numerous customers, as several high-profile supply-chain attacks have demonstrated.
If your business outsources IT support, do not treat the provider’s brand name or an informal assurance as proof of resilience. Ask specific questions: who can access your Microsoft 365 tenant, are privileged accounts protected by MFA, how quickly are critical vulnerabilities patched, where are backups held, and how would the provider isolate an incident affecting another client?
Conversely, if your SME is an MSP, investment in security controls and clear contractual documentation should be viewed as commercial infrastructure, not a discretionary compliance expense.
The insurance implication: evidence will matter more than a policy document
Cyber insurance does not replace operational security. It is designed to help a business respond to the financial and practical consequences of an incident, which may include forensic investigation, legal advice, customer notification, data restoration, business-interruption losses, cyber extortion support and third-party claims, subject to the policy wording.
However, insurers increasingly assess whether an applicant has baseline controls in place. As regulation and customer expectations increase, underwriting questions are likely to become more detailed and the difference between a well-controlled and poorly controlled SME may become more visible in pricing, excesses, conditions and available limits.
Controls commonly relevant to cyber-insurance applications
Although requirements differ by insurer and sector, SMEs should expect scrutiny of several areas:
- MFA: Particularly for remote email, cloud administration, VPNs and privileged accounts. MFA that is optional, inconsistently applied or limited to a handful of users may not satisfy an insurer’s expectations.
- Backups: Backups should be segregated from the main network, protected from deletion by compromised administrator credentials and tested through restoration exercises. Having a backup is not the same as being able to recover.
- Endpoint protection and patching: Businesses need an inventory of devices and software, prompt patching of critical vulnerabilities, and endpoint detection or anti-malware controls appropriate to their risk.
- Payment controls: Invoice fraud and business email compromise remain major SME exposures. Dual approval, independently verified changes to bank details and clear escalation procedures are essential.
- Incident planning: A written plan should identify decision-makers, key contacts, legal and IT support, communications responsibilities and the first actions required after a suspected breach.
A policy may also contain conditions, exclusions or duties requiring the insured to maintain certain protections, notify incidents promptly or obtain insurer approval before appointing external incident-response providers. SMEs should read these clauses before an incident, not while systems are unavailable.
A practical 90-day preparation plan
The proposed regime may take time to move through legislation and implementation, but waiting for final legal detail is unnecessary. The underlying controls are already useful for reducing ransomware, account takeover and supplier-related disruption.
Days 1–30: identify your critical dependencies
Create a short register of the systems that would stop the business operating: email, cloud storage, accounting software, ecommerce platform, customer relationship management system, production equipment and payment services. Record the provider, business owner, administrator accounts, data held, backup method and contractual renewal date.
This exercise often reveals concentrations of risk. For example, one Microsoft 365 global administrator account, one external IT supplier or one shared mailbox can be a single point of failure.
Days 31–60: close the most exploitable gaps
Enforce MFA across all users, prioritising administrators and email accounts. Remove dormant accounts, apply least-privilege access, review forwarding rules in email, patch exposed systems and test whether backups can restore a representative file set and a critical application.
Also implement a mandatory call-back process for changed supplier bank details. This low-cost control is highly relevant to both cyber fraud and insurer risk assessments.
Days 61–90: document, test and insure
Run a tabletop exercise based on a realistic scenario: a member of staff enters credentials into a fake Microsoft 365 page, suspicious mailbox rules appear, and a customer reports fraudulent emails. Decide who has authority to shut down access, contact the IT provider, notify the insurer and communicate with customers.
Then review cyber-insurance options with a broker or insurer that understands your sector. Compare the scope of cover, sub-limits, waiting periods for business interruption, ransomware and incident-response services, territorial limits, contractual liability provisions and exclusions. Do not choose solely on premium: a cheaper policy with narrow business-interruption cover may provide limited help during a prolonged outage.
Compliance should support commercial resilience
The most useful response to UK cybersecurity reform is not to create a folder of policies that no one follows. It is to establish demonstrable habits: knowing which systems matter, controlling access, restoring data, verifying payments and responding quickly when something goes wrong.
For SMEs, those habits can reduce the likelihood and impact of an attack, improve tender readiness and make insurance discussions more productive. They also help directors show that cyber risk has been considered as a business-continuity issue rather than left solely to an external IT provider.
FAQ
Will every UK SME be directly regulated under the new cybersecurity regime?
No. The expected regime is likely to focus directly on specified critical entities and digital service providers rather than every SME. However, smaller suppliers may face indirect obligations through customer contracts, procurement questionnaires and their own dependence on regulated providers.
Does Cyber Essentials guarantee that we can obtain cyber insurance?
No. Cyber Essentials can provide useful evidence of baseline controls, but it is not a guarantee of cover or a substitute for an insurer’s underwriting assessment. Insurers may still ask about MFA, backups, prior incidents, revenue, payment controls and the type of data or services your business handles.
What should an SME ask its managed IT provider now?
Ask how administrator access is protected, whether MFA is compulsory, how patches are prioritised, whether backups are immutable or segregated, how restoration is tested, what incident support is included, and whether the provider carries professional indemnity and cyber insurance appropriate to its role.
When should we notify our cyber insurer about an incident?
Check the policy wording, but notify the insurer or its incident-response helpline as soon as you reasonably suspect a cyber event that could lead to a claim. Early notification can help preserve cover and gives access to approved forensic, legal and communications support.
Fuente: White & Case LLP — Fri, 21 Nov 2025 08:00:00 GMT
