Cyber Security Consultancy & Consultants
London & UK
Gridisys is the UK cyber security consultancy helping businesses protect Microsoft 365, Google Workspace, and cloud infrastructure. From fixed-price risk assessments to 24/7 AI-powered managed SOC — enterprise security at SME prices. No long-term contracts; live in 24 hours.
Cybersecurity Services for UK Businesses
From London startups to UK-wide enterprises — we deliver practical, measurable security improvements.
Cyber Risk Assessments
Identify vulnerabilities across your infrastructure before attackers do. We deliver a prioritised risk report with clear remediation steps — fixed-price.
Managed SOC & Threat Hunting
AI-powered 24/7 Security Operations Centre monitoring Microsoft Entra, Office 365, and Google Workspace in near real time —, no contract.
Identity & Access Security
Harden Microsoft Entra ID and Google Workspace against credential theft, privilege escalation, and impossible-travel attacks — BEC defence starts here.
UK GDPR, ICO & FCA Compliance
Align your security posture with UK GDPR Article 33, ICO 72-hour breach notification, NIS2, Cyber Essentials, and FCA PS21/3 operational resilience expectations.
MSP Security Partnerships
White-label SOC services and consulting support for managed service providers serving UK clients — partner with a specialist, not a competitor.
Incident Response & Retainer
Rapid response and forensic investigation when a breach occurs — retainer, no large upfront. ICO notification handled when needed.
The UK Cyber Threat Reality
UK businesses face more cyber attacks than ever. The NCSC and DCMS report rising breach frequency, escalating costs, and phishing as the dominant attack vector. Understanding the landscape is the first step to defending against it.
50%
of UK businesses reported a cyber breach or attack in the last 12 months (DCMS 2024)
DCMS Cyber Security Breaches Survey
£3.4m
average annual cost of a cyber breach for a large UK business
DCMS / PwC
74%
of UK breaches involve phishing — the #1 attack vector against SMEs
NCSC Threat Report
21 days
average time to identify a breach in UK firms without 24/7 monitoring
IBM Cost of a Data Breach
Why UK SMEs are the #1 target
Attackers target SMEs because they hold valuable data (customer records, payment details, intellectual property) but typically have weaker defences than enterprises. The NCSC reports that 50% of UK businesses identified a breach in the last year, and the average cost now exceeds £20,000 for a medium firm — rising to £3.4m for large businesses. Phishing remains the dominant vector (74% of breaches), followed by ransomware, BEC, and supply-chain compromise. Without 24/7 monitoring, UK firms take an average of 21 days to even detect a breach — by which point data exfiltration is often complete.
How a Gridisys Consulting Engagement Works
A structured, four-phase methodology — from discovery to ongoing monitoring. Fixed-price, board-ready, and aligned to NCSC and UK regulatory expectations.
Discovery & Gap Assessment
We map your current security posture against NCSC Cyber Assessment Framework, Cyber Essentials, and your regulatory regime (UK GDPR, FCA PS21/3, NIS2). Includes Microsoft 365 / Entra ID configuration audit, endpoint review, and stakeholder interviews.
Risk Prioritisation & Roadmap
We score every identified risk by likelihood and business impact, then build a prioritised remediation roadmap aligned to your budget, risk appetite, and compliance deadlines. Board-ready documentation — no jargon.
Implementation & Hardening
We implement the highest-priority controls: conditional access policies, MFA enforcement, privileged account separation, mailbox hardening, Defender tuning, and logging configuration for SOC visibility.
Ongoing Monitoring & Review
Optional managed SOC monitoring keeps controls effective. Monthly ops reports, quarterly risk register refresh, and annual roadmap review ensure your security posture keeps pace with evolving threats.
UK Compliance Frameworks We Support
We map your security controls to the frameworks that matter for your sector — and produce the evidence auditors and regulators expect to see.
Cyber Essentials
Government-backed baseline for 5 core controls — firewalls, secure config, user access, malware protection, patch management.
Learn more →Cyber Essentials Plus
Independent technical audit on top of Cyber Essentials — hands-on vulnerability testing and configuration verification.
Learn more →UK GDPR
Article 32 security of processing, Article 33 72-hour breach notification, DPIA support, and lawful basis documentation.
Learn more →FCA PS21/3
Operational resilience for important business services, impact tolerance assessments, and SMCR accountability mapping.
Learn more →NIS2 Directive
EU-aligned critical infrastructure security for UK operators with EU exposure — risk management, incident reporting, supply chain.
Learn more →ISO 27001
Information security management system (ISMS) design, gap analysis, and certification readiness support.
Learn more →PCI DSS
Card payment data security — network segmentation, access control, and quarterly scan readiness.
Learn more →NHS DSPT
Data Security and Protection Toolkit for NHS-connected organisations — 10 data security standards.
Learn more →What's Included in Every Engagement
Every Gridisys cybersecurity consulting engagement — whether a focused risk assessment or a full security transformation — includes the following deliverables and support. No hidden extras, no surprise invoices.
Trusted Cybersecurity Consultants — London & Nationwide
Speak to a consultant today. Free 30-minute security review with no obligation.
Pricing tailored to your needs
Every engagement is scoped to your environment and requirements. Book a free consultation for a tailored quote — no obligation.
Why Choose Gridisys as Your
UK Cybersecurity Consultant?
We're not a generic IT firm that dabbles in security. Cybersecurity is our core — specifically protecting cloud identities, Microsoft 365, and Google Workspace for UK businesses that can't afford to get it wrong.
- UK-based cybersecurity consultants with London presence
- Specialist expertise in Microsoft Entra, Office 365 & Google Workspace
- AI SOC Hunters — 24/7 automated threat detection
- FCA-aligned and UK GDPR compliant advisory
- Fixed-fee consulting engagements — no hidden costs
- Response SLA within 4 hours for critical incidents
- Sector-specific experience across finance, law, healthcare, MSPs
- Cyber Essentials Plus readiness delivered in 4-week sprint
Gridisys Ltd
Company No. 15780405 · Registered in England & Wales
Registered office at 128 City Road, London EC1V 2NX. Serving businesses across London, the Home Counties, and nationwide UK with remote and on-site consulting options.
UK Sectors We Protect
Sector-specific cybersecurity consulting — each vertical has its own regulatory regime, threat profile, and Cyber Essentials readiness needs.
UK Cities Served
Looking for a local cybersecurity consultant? We have dedicated UK city landing pages with sector and regulatory context for each region.
Cybersecurity Consultants in London
London's business landscape is a prime target for cybercriminals. From City fintech firms to Shoreditch startups, we work with London businesses every day to secure their cloud environments, protect customer data, and stay ahead of evolving threats. Our London-based clients benefit from on-site consulting where needed, alongside 24/7 remote SOC monitoring.
Related UK Cybersecurity Guides
Our most-read UK cybersecurity guides — useful for buyers comparing options before booking a consultation.
Frequently Asked Questions
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