Virtual CISO in London
Fractional, board-level cybersecurity leadership for London scale-ups, fintechs, and professional services firms — without the full-time salary. Your part-time CISO sits in board meetings, leads ISO 27001 readiness, and translates technical risk into commercial decisions.
Fraction
of a full-time London CISO salary — your vCISO is part-time
3-5 days/mo
typical time allocation per client
24/7
Gridisys vCISO retainer — no long-term contract
Board-ready
monthly executive risk reporting included
Cybersecurity Consulting + 24/7 SOC Monitoring
Every Gridisys engagement is built on two pillars — strategic consulting to design the right controls, and managed SOC monitoring to keep them effective.
Cybersecurity Consulting
UK consulting engagements: risk assessment, security architecture, conditional access design, compliance (Cyber Essentials, UK GDPR, FCA PS21/3, NIS2), incident-response planning. Board-ready documentation, no jargon, no surprise invoices.
- Risk assessment + security architecture review
- Conditional access + Entra ID hardening design
- Cyber Essentials / UK GDPR / FCA / NIS2 compliance support
- Incident response planning + tabletop exercises
- Vendor + supply-chain security assessment
- Board / DPO reporting + evidence pack
Managed SOC Monitoring · 24/7
AI-augmented Security Operations Centre — continuous monitoring across Microsoft 365 / Entra ID, Defender, on-prem, and cloud. UK-based analysts, sub-hour triage on critical alerts. No long contract required.
- 24/7 SIEM monitoring — Microsoft 365, Entra ID, Defender, Azure, on-prem logs
- BEC + mailbox-compromise + OAuth grant abuse detection
- Suspicious sign-in + conditional access drift alerting
- Ransomware + lateral-movement detection from EDR + Defender
- Sub-hour triage on critical alerts, monthly ops report
- Optional + integrated with consulting engagements
Most engagements start with consulting (1-2 weeks), then SOC monitoring (ongoing ) keeps the controls effective.
Pricing tailored to your needs
Every engagement is scoped to your environment and requirements. Book a free consultation for a tailored quote — no obligation.
What we cover
Practical, board-ready consulting — no jargon, no surprise invoices.
Strategic security leadership
A documented security strategy aligned to your business goals — board reports, risk registers, and a 12-month roadmap, not generic checklists.
ISO 27001 readiness
Gap analysis, ISMS design, control selection, and certification-body preparation. We project-manage the whole thing end-to-end.
Vendor & supply-chain due diligence
Security reviews of the SaaS, cloud, and MSP vendors your London firm depends on — questionnaires, evidence collection, contractual controls.
FCA / SMCR accountability
For FCA-regulated fintechs and IFAs — map security controls to PS21/3 operational resilience, SMCR accountable individuals, and COBS obligations.
Investor & client due diligence support
Pre-investment security reviews, client RACI matrices, and client-facing security assurance packs to win enterprise deals.
Incident readiness & tabletop
A rehearsed incident response plan, role assignments, and 2x/year tabletop exercises so your team knows what to do before a real incident.
How we work
Discovery (week 1)
We review your current posture, regulatory exposure, current IT/MSP setup, and key business services. Output: a risk register and 90-day plan.
Roadmap (week 2-3)
We build a 12-month security roadmap aligned to your revenue, regulatory, and investor milestones. Approved at board level.
Embed (ongoing)
Monthly retainer: 3-5 days/month of CISO time. Board reporting, vendor reviews, control implementation oversight, and on-call for incidents.
Sectors we protect
Hire a Virtual CISO in London
Free 30-minute consultation. We'll assess whether a vCISO fits your stage and assemble a 90-day plan.
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