Cyber Security Firms UK
A comparison of the best UK cyber security firms for SMEs of 20-250 staff. Gridisys stands out with fixed-price consulting, 24/7 AI-augmented SOC, compliance, and incident response — all under one roof. No long contract.
Fixed
SOC from
3-in-1
SOC + consulting + compliance
24/7
UK-based monitoring
0
Hourly overruns
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.
Managed SOC
24/7 AI-augmented monitoring of Microsoft 365, Entra ID, Defender, and on-prem logs — sub-hour triage on critical alerts.
Consulting
Fixed-price risk assessments, compliance, conditional access design, and security architecture — board-ready.
Compliance
Cyber Essentials, ISO 27001, UK GDPR, FCA PS21/3, NIS2 — evidence from SOC telemetry, ready for auditors.
Incident Response
On-call IR with ransomware recovery, BEC forensics, and ICO breach notification — included in MSSP plans.
Penetration Testing
CREST-aligned web app, network, and infrastructure testing with free retests.
vCISO Services
Board reporting, risk register, and regulatory liaison.
How we work
Scoping call (15 min)
We assess your needs and risk profile. Fixed monthly or project price agreed.
Onboarding (24-48 hrs)
Log integration, detection rules, and compliance baseline established.
Ongoing delivery
24/7 monitoring, consulting on demand, compliance evidence, and monthly reporting.
Sectors we protect
The UK cyber security firm built for SMEs
SOC, consulting, compliance, and IR — one firm, one fixed fee.
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