Custodian360
Custodian360 is a UK-based managed security service provider offering a human-led 24/7 SOC with managed detection and response, MXDR, incident response, and compliance support, primarily serving UK SMEs with 50-250 employees and MSPs through subscription-based managed services with over 700 customers.
- Company typePrivate
- Founded2017
- HeadquartersTwyford, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Custodian360 does
Custodian360 is a UK-based managed security service provider founded in early 2017 and headquartered in Wokingham, Berkshire, operating as a private company with 11-50 employees. The firm delivers a human-led 24/7 Security Operations Centre (SOC) to UK small and medium-sized enterprises with 50-250 employees, as well as to Managed Service Providers and IT service companies that resell its services to their own end customers. Its core offering, SOC-as-a-Service, combines 24/7 threat detection and response with a guaranteed 60-minute human triage SLA and a claimed 18-minute Mean Time to Respond — positioning Custodian360 as a performance-focused alternative to fully automated MDR products.
The platform integrates SIEM, EDR, CSPM, and threat intelligence capabilities with native support for Microsoft 365, Azure, AWS, and Google Workspace environments, and applies AI-driven triage, anomaly detection, predictive threat intelligence, and automated containment (including ransomware rollback) on top of human analyst workflows. The product portfolio extends beyond SOCaaS to include MXDR, an incident response hotline and retainer service, compliance support (Cyber Essentials, ISO 27001, GDPR), managed data privacy, security awareness training, vulnerability detection, DNS filtering, an enterprise password manager, managed cloud monitoring, and managed DMARC/SPF records. All operations and data residency are wholly UK-based.
Custodian360 monetises through recurring monthly subscriptions on a 'Pay as you Grow' basis with no minimum commitments, sold either directly to SMEs or via an MSP Partner Programme that delivers bundles (Email Security, Security Awareness Training, Managed XDR, Password Manager, DNS Filtering, and 24x7 Cloud Monitoring) to channel partners. Pricing is quote-based and not publicly disclosed, with services available from a single licence. The company reports 700+ customers globally, a 97% customer retention rate since 2016, multiple consecutive years on the MSSP Alert Global Top 250 MSSPs list with improving rank year on year, and a July 2026 relocation to a new headquarters at Longstaff House, Wokingham.
Custodian360 firmographics
Firmographics- Name
- Custodian360
- Legal name
- CUSTODIAN360
- Website
- https://custodian360.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Custodian360 is a UK-based managed security service provider offering a human-led 24/7 SOC with managed detection and response, MXDR, incident response, and compliance support, primarily serving UK SMEs with 50-250 employees and MSPs through subscription-based managed services with over 700 customers.
- Ownership category
- akta.pro rank
Custodian360 industry classification
Industry- Product category
- Managed Security Services
- NAICS
- Computer Facilities Management Services (541513), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Managed Security Services (MSSP) & 24/7 SOC Operations (BPAKAHAA)
- akta.pro secondary industries
- Managed Detection & Response (MDR) & SOC Services (HDADAGAG), Security Operations Center (SOC) as a Service (BPAEADAB)
Keywords
Where Custodian360 is headquartered
LocationHeadquarters
- HQ city
- Twyford
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Custodian360 business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Managed Security Services (Subscription): Recurring monthly subscription for managed security services including SOC-as-a-Service, managed XDR, email security, DNS filtering, password management, vulnerability detection, and cloud monitoring. Services are offered on a 'Pay as you Grow' model with no minimum commitment or fixed-term contracts. Pricing starts from a single license, making it accessible to SMEs.
- MSP Bundle (Channel): Bundle of complementary managed security services (Email Security, Security Awareness Training, Managed XDR, Enterprise Password Manager, DNS & Web Filtering, 24×7 Cloud Monitoring) sold through MSP and IT service provider partners. Partners resell these services to their end customers, generating recurring revenue for both partners and Custodian360.
- Partner Programme (Recurring Revenue): MSP and reseller partners generate recurring monthly revenue by offering Custodian360's security services to their customer base. Partners pay for what they use each month with no minimum commitment, creating predictable costs for partners and recurring revenue streams for Custodian360.
- Incident Response Retainers: Low-cost incident response retainers providing guaranteed response within as little as 6 hours, with remote deployment of tools before moving to on-site presence if needed. Response frameworks aligned to NIST standards. Also includes crisis management training and bespoke response plans.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Single license entry point |
| Subscription | Monthly | MSP Bundle |
| Subscription | Pay-as-you-go | Incident Response Retainer |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
Custodian360 product offering
Product offeringCore offering
Custodian360 provides a human-led 24/7 Security Operations Centre (SOC) delivering managed detection and response (MDR/MXDR), incident response, email security, DNS filtering, vulnerability management, compliance support, and related managed security services. The core offering is SOC-as-a-Service with a <60-minute triage guarantee and 18-minute Mean Time to Respond, sold either directly to UK SMEs (50–250 employees) or through an MSP/IT provider partner programme.
Product overview
Custodian360 is a managed cybersecurity provider offering a unified portfolio of security services designed for UK SMEs and MSPs. The core offering is SOC-as-a-Service (SOCaaS), a human-led 24/7 Security Operations Center with guaranteed <60-minute triage and 18-minute Mean Time To Respond. This core service is supported by complementary modules including Incident Response Hotline, Compliance Support (Cyber Essentials & ISO 27001), Managed Data Privacy, Security Awareness Training, Vulnerability Detection & Management, DNS/Web/URL Filtering, Enterprise Password Manager, Managed Cloud Service Monitoring (supporting M365, AWS, Azure, G-Suite), Managed DMARC/SPF Records, and Managed Email Security & Filtering. For MSPs, the MSP Bundle packages these services together with smart integrations that reportedly reduce IT operational costs by 40%. All services are coordinated through the UK-based SOC and supported by AI-driven threat intelligence, proactive threat hunting, and automated containment capabilities.
Differentiator
Problem solved
Functional benefit
Products and services
- SOC-as-a-Service (SOCaaS) A human-led Security Operations Centre providing 24/7 threat detection and response with a <60-minute triage guarantee and 18-minute Mean Time to Respond, purpose-built for M365-centric UK SMEs with 50–250 employees.
- Incident Response Hotline 24/7/365 incident response service with guaranteed human answer within 2 minutes, providing rapid containment, eradication, attribution, and forensic investigation.
- Compliance Support Cyber Essentials and ISO 27001 certification support including gap assessments, remediation plans, evidence preparation, and GDPR compliance monitoring.
- Managed Data Privacy Automated discovery and protection of sensitive data across the organisation, encrypting data at rest and in transit, tracking files regardless of location, and providing visibility into Shadow IT and cloud storage.
- Security Awareness Training Managed phishing simulation and security awareness training with monthly simulated phishing campaigns, progressive training courses, automated credential breach monitoring, and credential reuse monitoring.
- Vulnerability Detection & Management Monthly or quarterly vulnerability scanning with full OS coverage and support for cloud and local applications, providing remediation paths and on-demand scanning with globally deployed agents.
- DNS, Web & URL Filtering DNS layer security with filters covering badware, content classifications, and applications, including allow and block lists with global coverage through local agents for threat containment and phishing protection.
- Enterprise Password Manager
Quantifiable outcome
- 97% customer retention rate maintained since 2016
- +8 more outcomes
Companies that use Custodian360
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles3 records
Custodian360 technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
AI capability6 records
Feature6 records
Custodian360 partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Prospect Global Ltd (trading as Sopro)minorCustodian360 has appointed Prospect Global Ltd (Sopro) as a digital marketing agent to conduct marketing activity on their behalf. Sopro is a digital marketing service provider registered in the UK (Reg. UK Co. 09648733), regulated by the ICO (ZA346877), and has its own data protection officer. Their privacy policy applies to their processing of personal information on behalf of Custodian360.
Scale indicators8 records
Recent moves7 records
Expansion highlights6 records
Custodian360 competitors and assessment
Company assessmentDirect peers
- eSentire: eSentire is a pure-play MDR provider with 24/7 SOC operations and Atlas XDR platform, serving mid-market and enterprise customers. Direct competitor on managed detection and response, threat hunting, and human-led SOC services.
- Huntress: Huntress provides managed detection and response, security awareness training, and identity threat detection purpose-built for MSPs serving SMBs. Direct peer given its MSP-first GTM motion and SME focus, which closely mirrors Custodian360's channel-led approach.
- Arctic Wolf: Arctic Wolf is a leading global MDR provider offering 24/7 SOC-as-a-service to SMEs and mid-market companies. It directly competes with Custodian360 on human-led MDR, channel-led GTM, and bundled managed security offerings for SMBs.
- CyberSmart: CyberSmart is a UK-based cybersecurity provider focused on SMEs, with strong emphasis on Cyber Essentials and compliance support. Direct peer given its UK focus, SME target segment, and overlap on compliance and managed security service offerings.
- Expel: Expel is a managed detection and response provider offering 24/7 SOC services with a transparent, customer-centric approach. Direct competitor on human-led MDR, SOC-as-a-service delivery, and integration with leading endpoint and cloud platforms.
- F-Secure (WithSecure): WithSecure (formerly F-Secure's corporate business) offers managed endpoint protection and MDR services to mid-market customers across Europe. Direct peer competing on managed detection and response for SMEs, with strong UK and European presence.
Broad incumbents
- ConnectWise: ConnectWise is a major MSP platform provider with cybersecurity offerings including managed detection and response. It competes with Custodian360 by offering security services as part of a broader MSP suite, targeting the same channel partner ecosystem.
- NCC Group: NCC Group is a UK-based cybersecurity services provider offering managed security services, incident response, and threat intelligence. It competes with Custodian360 on UK SME managed security, SOC services, and incident response retainers as a broader incumbent.
- Sophos (MDR): Sophos is a major cybersecurity incumbent offering Sophos MDR as a managed service alongside its broader endpoint, network, and cloud security portfolio. Competes with Custodian360 for SME customers, particularly those using M365 environments.
Regional players
- Redscan (Kroll Cyber Risk): Redscan, now part of Kroll's Cyber Risk practice, is a UK-based MDR and managed security services provider. Regional peer operating in the same UK SME market with comparable SOC-as-a-service and threat detection capabilities.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Custodian360 social profiles
Digital presenceCustodian360 compliance and trust
Trust signalCompliance4 records
Custodian360 financial estimates
Financial estimateRevenue estimate
Valuation estimate
Custodian360 leadership team
Management profileNumber of profiles
Profiles3 records
Custodian360 funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Custodian360 M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Custodian360
What does Custodian360 do?
Custodian360 provides a human-led 24/7 Security Operations Centre (SOC) delivering managed detection and response (MDR/MXDR), incident response, email security, DNS filtering, vulnerability management, compliance support, and related managed security services. The core offering is SOC-as-a-Service with a <60-minute triage guarantee and 18-minute Mean Time to Respond, sold either directly to UK SMEs (50–250 employees) or through an MSP/IT provider partner programme.
Is Custodian360 a public or private company?
Custodian360 is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Custodian360 founded?
Custodian360 was founded in 2017. It employs 11 to 50 people.
Where is Custodian360 based?
Custodian360 is headquartered in Twyford, United Kingdom, in the Europe region.
How does Custodian360 make money?
Four revenue lines are on record. Managed Security Services (Subscription) is the primary driver. The others are MSP Bundle (Channel), partner Programme (Recurring Revenue) and incident Response Retainers.
Who are Custodian360's main competitors?
Direct peers on record are eSentire, Huntress, Arctic Wolf, CyberSmart, Expel and F-Secure (WithSecure). Broad incumbents are ConnectWise, NCC Group and Sophos (MDR). Redscan (Kroll Cyber Risk) is listed as a regional player.
Does Custodian360 have an API?
No public API is recorded for Custodian360.
What industry is Custodian360 in?
Custodian360's product category is Managed Security Services. Its primary akta.pro industry code is BPAKAHAA, Managed Security Services (MSSP) & 24/7 SOC Operations, with a secondary code of HDADAGAG, Managed Detection & Response (MDR) & SOC Services. Its NAICS code is 541513 and its SIC code is 7370.