Building an in-house Security Operations Centre (SOC) gives a business direct control over security monitoring, incident investigation, and response. But that control comes with the cost of recruiting skilled analysts, maintaining security tools, and providing coverage outside normal working hours.
SOC as a Service UK businesses use offers an alternative: outsourced security monitoring and incident response delivered by a specialist provider. Instead of building an entire security operations function internally, a business gains access to external security expertise, monitoring technology, and agreed response services under a managed arrangement.
The decision is not about whether outsourcing costs less. It comes down to the level of monitoring your business needs, the risks it faces, the response capabilities it must maintain, and the resources available to manage security internally. This comparison explains the differences between an outsourced SOC and an in-house SOC, how costs compare, and which approach fits different UK business requirements.
What Is SOC as a Service?
SOC as a Service (SOCaaS) is an outsourced security operations service that monitors an organisation’s IT environment, investigates suspicious activity and supports incident response. The service is delivered by an external provider using security analysts, monitoring platforms and established detection procedures.
Depending on the agreement, SOC as a Service can include:
- 24/7 security monitoring: Continuous monitoring of agreed systems, with alerts investigated outside normal business hours.
- Threat detection and investigation: Analysis of suspicious logins, endpoint activity, network traffic and other security events.
- Security Information and Event Management (SIEM): Collection and correlation of logs from supported systems to identify suspicious patterns.
- Endpoint Detection and Response (EDR): Monitoring of endpoint activity and investigation of potential malware or unauthorised access.
- Incident escalation and response: Notification of incidents, recommendations for containment and, where included, authorised response actions.
- Reporting and security insights: Regular reports covering incidents, alert trends, vulnerabilities or other agreed security metrics.
What Is an In-House SOC?
An in-house SOC is a security operations function managed directly by an organisation’s own employees. The team monitors security events, investigates threats, manages detection tools and coordinates responses to cyber incidents.
An in-house SOC typically requires security analysts, a monitoring platform, defined investigation procedures and arrangements for escalation. Businesses with demanding security requirements might also need threat hunters, detection engineers, incident responders and security management personnel.
The main advantage is direct control. Internal analysts understand the organisation’s systems, business processes, users and operational priorities. They can work closely with IT, compliance, risk management and leadership teams when investigating suspicious activity or changing security controls.
In-House SOC vs Outsourced SOC: Key Differences
The main difference between an in-house SOC and an outsourced SOC is who operates the security monitoring function and how the required resources are funded and managed.
| Factor | SOC as a Service | In-house SOC |
| Staffing | The external provider supplies the agreed monitoring team. | Business recruits and manages its own analysts. |
| Monitoring hours | 24/7 coverage is available where included in the contract. | Depends on staffing and shift arrangements. |
| Technology | Monitoring platforms are commonly included or provided as part of the service. | Business selects, licenses and manages its tools. |
| Initial investment | Typically lower setup costs than building a full internal function | Potentially substantial recruitment, technology and setup costs. |
| Business knowledge | The provider needs onboarding and context about the business. | The internal team develops direct knowledge of systems and processes. |
| Control | Shared according to the service agreement | Greater direct control over priorities and operations |
| Scalability | Coverage and monitored assets can often be adjusted under the contract | Expansion requires additional staff, technology and management |
| Incident response | Depends on contracted investigation and response capabilities | Internal team handles response within its available capabilities |
| Management workload | Provider manages its service delivery; the business retains oversight | Business manages staffing, tooling, processes and performance |
SOC as a Service Cost vs In-House SOC Cost in the UK
Cost is a major consideration when comparing SOC as a Service with an in-house SOC. The key difference is between paying a provider for an agreed service and funding the people, technology and operational arrangements needed to run the capability internally.
How Much Does SOC as a Service Cost in the UK?
SOC as a Service pricing depends on the size and complexity of your IT environment, the number of endpoints and data sources monitored, service hours and the level of incident response included.
A smaller business with a limited number of devices and cloud applications will have different requirements from a company operating several sites, complex networks and business-critical systems.
Providers typically calculate pricing using one or more of the following factors:
- Number of endpoints or users: More devices, accounts and systems create additional monitoring requirements.
- Log volume and data sources: Collecting and analysing more security data affects platform capacity and service costs.
- Monitoring coverage: Continuous monitoring and out-of-hours escalation affect the service required.
- Incident response scope: Investigation and notification cost differently from services that include authorised containment and remediation.
- Onboarding and integration: Connecting systems, configuring detection rules and tuning alerts can create initial costs.
- Additional security services: Threat hunting, vulnerability management, compliance reporting and digital forensics can increase the contract value.
What Does an In-House SOC Cost?
An in-house SOC carries ongoing staffing and operating costs, even during periods when the team handles relatively few significant incidents.
The budget needs to cover analyst salaries, employer National Insurance contributions, pension costs, recruitment, training, security monitoring tools, log storage, infrastructure, management and staff coverage. Specialist expertise and out-of-hours operations add further demands.
The comparison should therefore use the total cost of operating the capability, rather than comparing a managed SOC subscription with one analyst’s salary.
Benefits of Managed SOC for Small Businesses
A managed SOC gives small businesses access to security monitoring and specialist support without requiring them to operate every part of the function internally. The commercial value comes from matching security coverage to business risks while keeping staffing and technology requirements manageable.
Access to Security Expertise
Recruiting experienced security analysts is challenging for businesses that cannot offer the career progression, specialist tools or team environment available at larger organisations. SOC as a Service provides access to an established monitoring team, subject to the provider’s capabilities and service agreement.
24/7 Security Monitoring in the UK
Threats do not follow office hours. A compromised account or suspicious remote login outside the working day can remain undetected until employees return unless the business has suitable monitoring arrangements.
A managed SOC offering genuine 24/7 monitoring provides a route to out-of-hours detection and escalation. However, businesses must distinguish continuous monitoring from continuous incident response. A provider might monitor systems around the clock but offer only limited response actions or require the client’s IT team to perform containment.
Reduced Internal Management Burden
Operating a SOC internally requires ongoing management of staff, detection rules, monitoring platforms, incident procedures and performance reporting. Outsourcing transfers responsibility for the agreed service delivery activities to the provider.
Your internal IT team can then concentrate on infrastructure, applications, user support and remediation work, while the SOC provider handles the monitoring and investigation functions defined in the contract.
More Predictable Security Spending
A managed SOC contract establishes the recurring cost of the agreed service, making it easier to plan the security budget. The provider manages its own staffing and service technology, while the customer pays according to the contract’s pricing structure.
Predictability depends on understanding what the contract includes. Additional data ingestion, new endpoints, forensic investigations, emergency response and changes to monitoring requirements can create extra charges.
Support for Risk Management and Compliance
Security monitoring generates evidence about suspicious activity, incidents and the effectiveness of selected controls. Reports from a managed SOC can support internal risk reviews, security governance and customer assurance processes.
However, hiring a SOC provider does not automatically make a business compliant with UK GDPR, ISO 27001 or other applicable requirements. Your organisation remains responsible for its own legal and contractual obligations, including decisions about incident reporting and risk treatment.
When Should a UK SME Choose an In-House SOC?
An in-house SOC is worth considering when the business needs direct operational control, has sufficient security resources and can justify the ongoing cost of running the function.
It is particularly relevant where security operations need close integration with complex internal systems, proprietary technology or business-specific processes. Internal analysts can build detailed knowledge of normal activity, investigate unusual behaviour in context and coordinate directly with infrastructure and application teams.
Before building an in-house SOC, assess three practical questions:
Can you recruit and retain the right people? A functional SOC needs the skills to investigate alerts, maintain detection rules, manage tools and respond to incidents. Recruitment is only the beginning; ongoing training and staff retention matter as well.
Can you provide the required coverage? If your business needs 24/7 monitoring, calculate the staffing and escalation arrangements required to sustain it. A small internal team may struggle to maintain continuous coverage without external support.
Will the workload justify the investment? Compare the expected security monitoring requirements with the full cost of staffing, technology and management. If internal demand is limited, outsourcing specific capabilities could provide a more proportionate arrangement.
How to Choose a SOC as a Service Provider
Choosing a provider requires more than comparing monthly fees. You need to establish what the service monitors, how it handles incidents, and whether it fits your business’s technical environment and operational requirements.
Check the Monitoring Scope
Ask the provider to identify the systems and data sources covered by the service. These might include Microsoft 365, cloud infrastructure, endpoints, firewalls, servers, identity platforms, and business-critical applications.
Confirm which systems are excluded and what happens when your business adds new devices, applications, or cloud services. Monitoring a limited part of your environment can leave blind spots if important assets fall outside the agreed scope.
Review Detection and Incident Response Capabilities
Find out how the provider investigates alerts, distinguishes genuine threats from false positives and escalates confirmed incidents. Ask for examples of the information included in an incident notification and how the provider supports containment.
Check whether the contract covers alert monitoring only, investigation, incident coordination, or active response. If the provider can isolate endpoints or disable accounts, establish the authorization process, permitted actions, and safeguards against disrupting essential services.
Examine Service Levels and Escalation Times
The service-level agreement (SLA) should define measurable obligations rather than promise vague or undefined rapid response.
Review the agreed monitoring hours, priority classifications, notification deadlines, investigation targets, escalation channels and reporting frequency. Ask how the provider handles incidents outside business hours and what happens if the service fails to meet its commitments.
Assess Data Handling and Access Controls
A SOC provider may receive logs containing usernames, IP addresses, device information and details about user activity. Establish where this information is stored, who can access it, how long it is retained and whether subcontractors process it.
Check how the provider secures its own access to your environment. Appropriate controls include least-privilege permissions, multi-factor authentication, restricted administrative access and documented procedures for removing access when staff or contracts change.
Check Reporting and Business Fit
Request sample reports showing how the provider communicates incidents, trends, unresolved risks and recommended actions. Reporting needs to help your team make decisions, not simply provide a list of alerts.
Ask about onboarding, integration with your existing IT support, service reviews, exit arrangements and the process for transferring monitoring to another provider. A technically capable SOC is only useful if your organisation can act on its findings.
Is a Hybrid SOC the Better Option?
For some UK SMEs, a hybrid SOC combines the advantages of internal business knowledge with the monitoring capacity of an external provider. The business retains responsibility for security decisions and remediation while outsourcing selected monitoring, investigation or specialist response functions.
For example, an SME might have an internal IT manager who understands its applications, users and infrastructure, while an external SOC provides 24/7 monitoring and investigates security alerts. The IT manager handles internal coordination, approves disruptive actions where required and oversees the resolution of identified weaknesses.
This model can also work for businesses with an established IT team that cannot justify recruiting a full security operations team. External analysts provide additional monitoring capacity, while internal staff retain control over business priorities and system changes.
Choose the Right SOC Solution for Your UK Business
For UK SMEs, the decision between SOC as a service and an in-house SOC comes down to the security coverage the business needs and the resources it can commit to delivering it. An in-house SOC offers direct control and detailed knowledge of internal systems, but it demands ongoing investment in skilled staff, technology and operational coverage. SOC as a Service gives businesses access to specialist monitoring and, where included, incident response without building the entire function internally.
Cubersecurity Services UK can help businesses assess their security monitoring requirements and identify an approach that fits their infrastructure, risks and budget. Before committing to a service, confirm its monitoring scope, incident response responsibilities, service levels and total costs. The right arrangement gives your business defined security coverage and a clear process for acting when threats emerge.
FAQs
1. What is SOC as a Service in the UK?
SOC as a Service is an outsourced security operations service that monitors an organisation’s IT environment, investigates suspicious activity and escalates security incidents. Depending on the contract, it can include 24/7 monitoring, threat detection, incident investigation, response support and security reporting.
2. Is SOC as a Service cheaper than an in-house SOC?
SOC as a Service can cost less than building a full in-house SOC because the business does not directly fund the provider’s entire analyst team and monitoring infrastructure. Actual costs depend on the service scope, monitored systems, coverage hours and incident response requirements. Compare total costs rather than subscription fees alone.
3. Does a small business need 24/7 security monitoring?
A business handling sensitive information, relying on cloud services or operating outside standard office hours needs to assess whether continuous monitoring is appropriate. The decision depends on the likelihood and impact of threats, the systems involved and the speed at which the business needs to respond to suspicious activity.
4. What is the difference between a managed SOC and an MSSP?
A managed security operations centre focuses on security monitoring, threat detection and incident investigation or response. A Managed Security Service Provider (MSSP) is a broader term for a provider delivering managed security services, which can include a SOC alongside services such as firewall management, vulnerability management, and endpoint protection. The exact scope varies by provider.
5. What should UK SMEs check before choosing a managed SOC?
Review the provider’s monitoring coverage, supported systems, incident response capabilities, escalation times, service-level agreement, data handling practices and reporting. Confirm who is authorised to contain threats, what additional charges apply and which responsibilities remain with your business.