MSPs and the Cyber Security and Resilience Bill

The UK may bring MSPs under direct cyber resilience regulation. Here's what emerged from the DSIT stakeholder session on the Cyber Security Bill.

For the first time, the UK government is seriously considering bringing Managed Service Providers under direct cyber resilience regulation.

The Assurix team recently attended a DSIT / TechUK stakeholder consultation session focused specifically on MSPs and systemic supplier risk. The discussion provided one of the clearest early signals yet about how the government is thinking about MSP oversight - and what providers should be preparing for now.

Why the UK Government Is Focusing on MSPs

Over the past decade, regulators have become increasingly concerned about supply chain cyber risk. The logic is straightforward.

If attackers compromise a single organisation that supports dozens or hundreds of companies, the impact multiplies rapidly. Managed service providers sit at the centre of this risk.

MSPs often have privileged access to client infrastructure, networks, identity systems, endpoint management tools, backups, and monitoring platforms. This makes them a high-leverage attack point. If an attacker compromises an MSP, they may gain access to multiple organisations simultaneously.

This concern is not new, but the Cyber Security and Resilience Bill represents the first time the UK government has moved toward making MSP oversight a formal legislative matter. Our earlier guide on what the Bill means for UK MSPs covers the broader legislative context in detail.

Are MSPs Actually Going to Be Regulated?

Based on what was discussed in the DSIT session, the answer is yes - but not all MSPs.

The Bill is expected to bring certain managed service providers into scope, particularly those meeting specific definitions and thresholds. The focus will likely be on MSPs whose disruption could create broader consequences for the UK economy or critical services.

The exact thresholds have not yet been published. Much of the operational detail will come later through secondary legislation and regulatory guidance.

How the Government Is Defining "Managed Service Provider"

One of the most important topics discussed during the session was how the government will define MSPs for the purposes of regulation. Two elements appear central to the definition.

Ongoing management of IT systems

The Bill is focused on organisations providing continuous operational management of systems, rather than one-off consulting or project work. Examples likely to fall within scope include infrastructure management, patching and maintenance, endpoint management, security monitoring, network management, and system administration.

Contractual delivery of services

The services must typically be delivered under contract for ongoing management of systems. Providers offering one-off advisory work, consulting services, or implementation projects may fall outside the definition.

Interestingly, cloud platforms themselves are expected to be handled under separate regulatory regimes, meaning the MSP provisions are focused specifically on service providers managing customer environments.

The New Category: Designated Critical Suppliers

A significant concept introduced in the discussion is the category of Designated Critical Suppliers (DCS). This classification would apply to suppliers whose disruption could create systemic national impact.

Regulators emphasised that the threshold will be intentionally high. Designation is expected to follow a five-part test, considering whether the supplier supports regulated organisations, the extent of reliance on network and information systems, the potential for disruption, the national impact if services fail, and whether other regulatory regimes already address the risk.

Incident Reporting Could Become Much Faster

One of the most likely operational changes for MSPs is more structured incident reporting requirements. If an MSP falls within scope of the regulation, it may be required to report qualifying cyber incidents to both the Information Commissioner's Office (ICO) and the National Cyber Security Centre (NCSC). Providers may also need to notify affected customers when incidents impact their services.

While precise timelines have not yet been confirmed, many observers expect rapid reporting windows - potentially similar to other cyber regulatory frameworks that require notification within 24 to 72 hours.

What In-Scope MSPs May Have to Do

If a provider is classified as a Relevant Managed Service Provider (RMSP) under the legislation, several obligations may apply.

These requirements are still evolving, but the common thread is clear: regulators want to see that providers can demonstrate their resilience posture, not just claim it.

One Big Concern: Regulatory Duplication

A recurring theme during the session was concern about overlapping regulation. There are currently around a dozen different regulators involved in cyber oversight across sectors. Industry stakeholders raised concerns about duplicated reporting requirements, multiple regulatory fees, conflicting expectations, and administrative complexity.

As a result, many organisations are pushing for clear coordination between regulators or a single lead regulator model. How this will ultimately be implemented remains an open question.

When Will These Changes Happen?

The expected regulatory timeline based on the DSIT consultation session.

While 2027 may feel distant, regulatory preparation often takes longer than organisations expect. MSPs will need to assess their readiness well before formal enforcement begins.

What MSP Leaders Should Be Thinking About Now

Even though the final rules are not yet published, the direction of travel is already clear. Regulators are increasingly focused on evidence of operational resilience. This means MSPs should start thinking about how they would demonstrate incident response readiness, security governance, monitoring capabilities, supplier risk management, and resilience processes.

The conversation is shifting from claims to evidence. For many MSPs, the challenge is not necessarily implementing good security practices - it is demonstrating them clearly to external stakeholders.

This mirrors a broader pattern we have seen in MSPs that support Critical National Infrastructure clients - where the bar for demonstrable governance has already risen significantly ahead of formal regulation.

The Bigger Shift: From Trust to Proof

Governments, insurers, and enterprise buyers are all moving toward verification-based assurance.

The Cyber Security and Resilience Bill reflects a broader shift across the cyber industry. Governments, insurers, and large organisations are increasingly moving toward verification-based assurance. Instead of trusting suppliers to operate securely, they want evidence - mapped security frameworks, documented governance processes, structured incident response plans, and demonstrable operational maturity.

For MSPs that already operate at a high standard, this shift could become a commercial advantage, not just a compliance burden. Providers who can demonstrate resilience clearly may find it easier to win and retain clients, justify higher rates, and stand apart from competitors who rely on the same generic claims. This is the commercial dimension of regulatory readiness that many MSP leaders underestimate. We covered this in more depth in our piece on why good MSPs still lose deals on price.