Cybersecurity Services in the United Kingdom

Big0 delivers comprehensive cybersecurity services across the UK, protecting businesses from evolving cyber threats while ensuring compliance with NCSC guidance, Cyber Essentials requirements, and industry-specific security regulations. With security operations centers in London and Manchester, we serve organizations throughout England, Scotland, Wales, and Northern Ireland.

Our UK cybersecurity practice combines world-class technical expertise with deep understanding of the British threat landscape, regulatory requirements (NIS Regulations, GDPR, sector-specific rules), and government security frameworks including NCSC guidance and CHECK scheme standards.

Why UK Organizations Choose Big0 for Cybersecurity

The UK faces sophisticated cyber threats from nation-state actors, organized crime groups, and opportunistic attackers. British businesses, government agencies, and critical infrastructure providers require robust security measures that address these threats while meeting stringent regulatory requirements.

NCSC Guidance & Government Standards The National Cyber Security Centre (NCSC) provides authoritative cybersecurity guidance for UK organizations. We align all security implementations with NCSC recommendations, including the Cyber Assessment Framework (CAF) for critical infrastructure, 10 Steps to Cyber Security, and Cloud Security Principles for cloud adoption.

Cyber Essentials & Cyber Essentials Plus As a Cyber Essentials certified organization, we help UK businesses achieve and maintain Cyber Essentials and Cyber Essentials Plus certification. These government-backed schemes are mandatory for public sector contracts over £5 million and increasingly expected by private sector supply chains.

CHECK Scheme Penetration Testing Our security team includes CHECK-accredited penetration testers certified by the NCSC. CHECK (CREST-accredited) scheme ensures penetration testing meets government standards, required for public sector organizations and recommended for critical infrastructure.

Financial Services Security (CBEST, DORA) For financial services organizations, we provide CBEST (threat-led penetration testing), compliance with FCA requirements, implementation of DORA (Digital Operational Resilience Act) controls, and alignment with Bank of England supervisory expectations.

Comprehensive Cybersecurity Services in the UK

NCSC-Aligned Security Assessments

Cyber Assessment Framework (CAF) Implementation Complete CAF assessments for critical national infrastructure (CNI) operators. We evaluate your organization against 14 CAF principles across four objectives (Managing Security Risk, Protecting Against Cyber Attack, Detecting Cybersecurity Events, Minimizing Impact), identifying gaps and implementing improvements to meet NCSC expectations.

10 Steps to Cyber Security Structured implementation of NCSC's 10 Steps to Cyber Security framework: risk management, secure configuration, network security, managing user privileges, user education and awareness, incident management, malware prevention, monitoring, removable media controls, and home and mobile working security.

Cloud Security Principles Assessment Evaluation of cloud services against NCSC's 14 Cloud Security Principles. We assess data protection, asset protection, separation, governance, operational security, personnel security, secure development, supply chain security, and other critical areas before cloud adoption.

Security Architecture Review Comprehensive analysis of your security architecture against NCSC patterns and best practices. We identify vulnerabilities, recommend improvements, and create roadmaps for enhancing security posture aligned with UK threat landscape.

Cyber Essentials Certification Support

Cyber Essentials Basic Certification Guidance and implementation support for achieving Cyber Essentials certification. We help you implement the five technical controls: firewalls, secure configuration, user access control, malware protection, and security update management. Our support ensures you pass self-assessment or certification body audit first time.

Cyber Essentials Plus Certification Enhanced certification including hands-on technical verification by certification body assessors. We prepare your systems for technical testing, remediate any identified issues, and ensure successful certification that demonstrates robust security to customers and partners.

Certification Maintenance & Renewal Annual recertification support ensuring your Cyber Essentials controls remain effective. We conduct quarterly reviews, implement security updates, adapt to control changes, and manage renewal process seamlessly.

Supply Chain Cyber Essentials Helping UK businesses meet supply chain security requirements. Many large organizations now require suppliers to hold Cyber Essentials or Cyber Essentials Plus. We enable you to meet these requirements and win contracts.

Penetration Testing & Ethical Hacking

CHECK Scheme Penetration Testing NCSC-certified penetration testing conducted by CHECK-accredited testers. Required for UK central government, wider public sector, and critical national infrastructure. Our CHECK tests follow NCSC-approved methodologies and deliver reports meeting government standards.

CBEST Threat-Led Testing (Financial Services) Bank of England's CBEST framework for threat intelligence-led penetration testing. We simulate sophisticated attacks based on real threat intelligence specific to your organization, testing resilience against nation-state and advanced persistent threat actors targeting UK financial sector.

Web Application Penetration Testing Comprehensive testing of web applications for vulnerabilities: SQL injection, XSS, CSRF, authentication bypass, authorization flaws, business logic errors. Testing follows OWASP Testing Guide and NCSC web application security guidance.

Infrastructure Penetration Testing Network and infrastructure testing identifying vulnerabilities in firewalls, routers, servers, databases, and other systems. We simulate external attacks and insider threats, providing prioritized remediation guidance.

Wireless Network Security Testing Assessment of WiFi security, guest networks, and wireless infrastructure. Testing for weak encryption, rogue access points, evil twin attacks, and other wireless vulnerabilities common in UK business environments.

Social Engineering & Phishing Simulations Realistic phishing campaigns testing user awareness and response to social engineering attacks. We create campaigns mimicking threats targeting UK organizations (HMRC scams, CEO fraud, COVID-19 phishing) and provide targeted security awareness training based on results.

Security Operations & Monitoring

24/7 Security Operations Center (SOC) UK-based security monitoring from our London and Manchester SOC facilities. Real-time threat detection, incident response, and continuous monitoring of your IT infrastructure, cloud environments, and endpoints.

SIEM Implementation & Management Security Information and Event Management (SIEM) solutions that aggregate logs, detect threats, and enable rapid response. We deploy and manage leading SIEM platforms (Splunk, IBM QRadar, Microsoft Sentinel) configured for UK threat landscape.

Threat Intelligence Integration Integration with UK-focused threat intelligence feeds including NCSC's Cyber Defence Early Warning System, industry-specific threat sharing (CiSP for infrastructure, FS-ISAC for finance), and global threat intelligence to protect against emerging threats.

Incident Response & Forensics Rapid incident response when security breaches occur. Our UK-based incident response team contains threats, performs forensic analysis, ensures regulatory reporting (ICO notification within 72 hours for GDPR breaches), and restores operations securely.

Vulnerability Management Continuous vulnerability scanning, prioritization, and remediation tracking. We identify security weaknesses before attackers exploit them, align patching with NCSC guidance, and reduce your attack surface systematically.

Compliance & Regulatory Security

GDPR & Data Protection Security Technical security measures ensuring GDPR compliance: encryption, pseudonymization, access controls, data breach detection, and security incident response. We implement ICO's recommended security practices and support DPIA (Data Protection Impact Assessment) processes.

NIS Regulations Compliance Network and Information Systems (NIS) Regulations compliance for operators of essential services (energy, transport, health, water, digital infrastructure) and digital service providers. We implement security and incident notification requirements.

DORA Compliance (Financial Services) Digital Operational Resilience Act (DORA) compliance for financial institutions. We implement ICT risk management frameworks, incident reporting procedures, digital operational resilience testing, and third-party risk management meeting DORA requirements.

PCI DSS Compliance Payment Card Industry Data Security Standard compliance for organizations handling card payments. We implement 12 PCI DSS requirements, conduct required security testing, and manage annual compliance validation.

ISO 27001 Implementation Information Security Management System (ISMS) implementation following ISO 27001 standard. We help UK organizations achieve certification, implement security controls, and maintain compliance with this internationally recognized standard.

Industry-Specific Cybersecurity in the UK

Financial Services Security

UK financial institutions face sophisticated cyber threats and stringent regulatory requirements from FCA, PRA, and Bank of England. We provide security solutions that protect customer assets, ensure operational resilience, and meet regulatory expectations.

Services include: CBEST threat-led testing, operational resilience implementation, fraud detection systems, secure payment processing, customer data protection, regulatory reporting systems, third-party risk management, and resilience testing.

Key outcomes: FCA compliance, Bank of England operational resilience alignment, protection against financial crime, customer trust, and competitive advantage through security excellence.

Healthcare & NHS Security

NHS organizations and private healthcare providers must protect sensitive patient data while ensuring service availability. We implement security measures meeting NHS Digital standards, Care Quality Commission expectations, and Data Security and Protection Toolkit (DSPT) requirements.

Services include: NHS Digital security assessment, DSPT compliance, clinical system security, medical device security, patient data protection, GP Connect security, NHS App security, and incident response for healthcare.

Key outcomes: DSPT compliance, CQC readiness, patient data protection, clinical system availability, and secure digital health services.

Critical National Infrastructure

CNI operators (energy, water, transport, communications) face nation-state threats and must meet NCSC's Cyber Assessment Framework. We provide security solutions that protect critical services while meeting regulatory requirements.

Services include: CAF assessments, OT/ICS security, SCADA protection, network segmentation, threat intelligence for CNI, incident response, security architecture review, and supply chain security.

Key outcomes: CAF compliance, operational resilience, protection against advanced threats, regulatory confidence, and national security contribution.

Public Sector Security

UK government departments, local councils, and public bodies must implement NCSC guidance and meet Government Security Classifications. We provide security solutions aligned with government standards.

Services include: Government Security Classifications implementation, CHECK penetration testing, Cyber Essentials Plus certification, cloud security (aligned with NCSC Cloud Security Principles), secure collaboration tools, and public sector incident response.

Key outcomes: NCSC compliance, data classification controls, certified security testing, secure cloud adoption, and protection of citizen data.

Retail & E-commerce Security

UK retailers and e-commerce businesses must protect customer payment data, prevent fraud, and maintain trust. We implement security measures that protect revenue and customer relationships.

Services include: PCI DSS compliance, fraud prevention systems, DDoS protection, secure payment processing, customer data protection, supply chain security, and incident response for retail.

Key outcomes: PCI DSS compliance, fraud reduction, customer trust, secure online transactions, and business continuity.

UK Cybersecurity Technology Stack

Security Assessment & Testing

• Penetration Testing: Kali Linux, Metasploit, Burp Suite Pro, OWASP ZAP
• Vulnerability Scanning: Nessus, Qualys, Rapid7 InsightVM, OpenVAS
• Code Security: SonarQube, Checkmarx, Veracode, GitLab SAST
• Compliance Tools: Nmap, Nikto, SQLMap, custom exploitation frameworks

Security Monitoring & Response

• SIEM Platforms: Splunk Enterprise Security, IBM QRadar, Microsoft Sentinel, Elastic SIEM
• EDR/XDR: CrowdStrike Falcon, Microsoft Defender for Endpoint, SentinelOne
• Network Security: Palo Alto Networks, Cisco Firepower, Fortinet FortiGate
• Threat Intelligence: MISP, ThreatConnect, Anomali, NCSC feeds

Identity & Access Management

• IAM Solutions: Azure AD, Okta, Ping Identity, Auth0
• PAM Systems: CyberArk, BeyondTrust, Thycotic Secret Server
• MFA: Duo Security, Microsoft Authenticator, YubiKey, RSA SecurID
• SSO: SAML 2.0, OpenID Connect, OAuth 2.0

Data Protection & Encryption

• Encryption: AES-256, TLS 1.3, BitLocker, FileVault, VeraCrypt
• DLP: Symantec DLP, McAfee DLP, Microsoft Purview
• Backup Security: Veeam, Commvault, encrypted cloud backup
• Key Management: AWS KMS, Azure Key Vault, HashiCorp Vault

Cloud Security

• CSPM: Prisma Cloud, Cloudflare, Microsoft Defender for Cloud
• Cloud SIEM: Sumo Logic, Datadog Security Monitoring
• Container Security: Aqua Security, Sysdig, Twistlock
• API Security: Salt Security, Traceable AI, API gateways

Cybersecurity Pricing for UK Organizations

Our UK cybersecurity services pricing reflects the scope, complexity, and regulatory requirements of your organization. Investment typically ranges from £5,000 for focused assessments to £500,000+ for comprehensive security transformation programs.

Cyber Essentials Certification: £2,000 - £8,000 Implementation support and certification for Cyber Essentials (£2,000-£4,000) or Cyber Essentials Plus (£4,000-£8,000). Includes gap analysis, remediation support, and certification body liaison.

Penetration Testing: £5,000 - £50,000 Web application testing (£5,000-£15,000), infrastructure testing (£10,000-£30,000), CHECK scheme testing (£20,000-£50,000). Pricing depends on scope and complexity.

Security Assessment & Strategy: £15,000 - £60,000 Comprehensive security assessment, gap analysis against NCSC frameworks, risk assessment, and strategic roadmap. CAF assessments for CNI typically £30,000-£60,000.

SIEM Implementation: £50,000 - £200,000 Complete SIEM deployment including platform licensing, integration, use case development, training, and optimization. Ongoing management £5,000-£20,000/month.

Managed Security Services: £5,000 - £50,000/month 24/7 SOC monitoring, threat detection, incident response, vulnerability management, and security reporting. Pricing based on infrastructure size and service level.

Compliance Programs: £30,000 - £150,000 ISO 27001 implementation (£30,000-£80,000), NIS Regulations compliance (£40,000-£100,000), DORA implementation (£60,000-£150,000). Includes all controls, documentation, and certification support.

All pricing excludes UK VAT. We offer fixed-price engagements for defined scopes and retainer arrangements for ongoing security services.

UK Cybersecurity Locations

London Cybersecurity Services

London's position as global financial center and technology hub creates unique security challenges. Our London security team specializes in financial services security (CBEST, FCA compliance), fintech security, enterprise security for multinational corporations, and protection of high-value digital assets.

We serve London's thriving tech sector, financial district, professional services, media companies, and government departments requiring sophisticated security solutions.

Manchester Security Operations

Manchester's growing digital economy and Northern Powerhouse initiative drive demand for robust cybersecurity. Our Manchester SOC provides 24/7 monitoring for businesses across Northern England, delivering enterprise-grade security accessible to regional SMEs.

Manchester clients value our understanding of regional business dynamics, competitive pricing, and commitment to supporting Northern England's digital growth.

Edinburgh & Scotland

Scotland's financial services sector, energy industry (oil & gas, renewables), and public sector require specialized security expertise. We provide security solutions for Scottish banks, energy companies, universities, NHS Scotland, and Scottish Government agencies.

Our Scotland practice addresses unique Scottish regulatory considerations while integrating with UK-wide security frameworks.

National Coverage

Beyond major cities, we serve UK organizations nationwide with remote security services, regional on-site assessments, and coverage across England, Scotland, Wales, and Northern Ireland. Cloud-based security services enable us to protect distributed organizations effectively.

Success Stories: UK Cybersecurity Implementations

London Bank CBEST Assessment

Conducted threat-led penetration testing for major London bank under CBEST framework. Simulated advanced persistent threat attacks based on real intelligence, tested incident response capabilities, and validated security controls protecting £2B+ in customer assets.

Results: Identified critical vulnerabilities before attackers could exploit them, improved security posture by 65%, met Bank of England supervisory expectations, enhanced board-level security visibility.

NHS Trust Security Transformation

Implemented comprehensive security program for large NHS Trust serving 1.5M patients. Achieved DSPT compliance, implemented SIEM monitoring, conducted security awareness training for 5,000 staff, and established incident response capability.

Results: DSPT compliance achieved, 80% reduction in security incidents, successful CQC inspection, improved patient data protection, £2M cyber insurance premium reduction.

CNI Cyber Assessment Framework

Delivered complete CAF assessment for critical infrastructure operator in energy sector. Evaluated all 14 CAF principles, identified 47 improvement opportunities, created 24-month remediation roadmap, and provided ongoing NCSC liaison.

Results: CAF compliance achieved, enhanced resilience against nation-state threats, regulator confidence improved, operational security enhanced without impacting service delivery.

Retail PCI DSS Compliance

Implemented PCI DSS compliance program for UK retail chain with 300+ stores processing 5M card transactions annually. Deployed point-to-point encryption, network segmentation, security monitoring, and annual compliance validation.

Results: PCI DSS Level 1 compliance achieved, zero payment card breaches, customer trust maintained, £500,000 potential breach costs avoided, reduced cyber insurance costs by 35%.

Get Started with Cybersecurity Services in the UK

Protect your organization from cyber threats while meeting UK regulatory requirements. Big0's cybersecurity teams in London and Manchester are ready to help you build robust security that enables business growth.

Contact our UK security team: - London SOC: +44 20 XXXX XXXX - Manchester SOC: +44 161 XXX XXXX - Email: [email protected] - Emergency Hotline: +44 800 XXX XXXX (24/7)

We offer free security consultations to assess your current posture, identify critical risks, and recommend prioritized improvements. Whether you need Cyber Essentials certification, CHECK penetration testing, or comprehensive security transformation, we're here to help.