Cybersecurity Consulting — Westminster (SW1)
Westminster and SW1 host a unique mix: public sector + government suppliers, professional services to government, lobby firms, think tanks, plus central-London SMEs. Cybersecurity exposure includes cyber incidents deemed national-security-impact (where they hit critical suppliers), NIS2 (where supplying critical sectors), and elevation reputation impact. Gridisys delivers Westminster-specific managed SOC, Government Supplier Cyber Essentials Plus, and public-sector-aligned breach response.
SW1 cluster
UK government supplier + professional services concentration
Cyber Essentials +
often mandatory for central government contracts over threshold
24/7
Gridisys managed SOC for Westminster firms — no contract
NIS2 aware
transposed NIS2 — reaching some Westminster suppliers in critical sectors
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 for SW1 firms
24/7 monitoring of M365 / Entra across management, government-relations team, finance. Targets: dealing-rule email compromise on government contracts (auth compromise often leads to fraudulent invoicing), OAuth grant abuse on multi-vendor CRM / e-tendering platforms (In-Tend, Atamis, CTM), after-hours admin sign-ins.
Cyber Essentials + CE Plus certification support
Central government contracts above CE threshold typically require Cyber Essentials Plus (with independent assessment). We deliver pre-certification remediation: 5 controls (firewall, secure configuration, user access control, malware protection, patch management) audited + assessed ready for IASME-accredited CBS.
Government-contract TPRM pack
Crown Commercial Service supplier due-diligence expects: cyber-risk policy, vendor / sub-processor register, exit strategy, breach notification arrangements. We prepare the pack in CCS-ready format with all the annexes.
PSC + national-security incident preparedness
Where you provide services to government / public sector, impact of cyber incident may extend beyond commercial — possibly enforcement / regulatory reporting + notification to your government customer + CCS briefing. We design pre-incident CCS-ready notification + post-incident pack.
NIS2 awareness + critical-supplier scoping
NIS2-transposed UK regulations (incl. NIS Regulations 2018 + 2024 updates) bring some Westminster suppliers into scope: digital infrastructure, cloud, certain outsourcing arrangements. We scope applicability + evidence pack.
ICO breach + customer (gov) notification retainer
Breach response covers ICO 72-hour clock + parallel customer notification to your government customer (often faster — your contract may obligate 'immediate' notification, breach of which is contractual breach). Coordinated ICO + contractual + Art. 34 (where individual data subjects affected).
How we work
Scoping (Week 1)
Confirm public-sector / government-supplier status, major contract requirements, CE Plus status, key vendors / sub-processors, current M365 / Entra posture.
Deploy (Week 1-2)
Connect M365 / Entra to Gridisys SOC. Conditional access: MFA everywhere, finance / government-contract mailboxes restricted, monitoring of CRM / e-tendering OAuth grants.
Government-supplier evidence (Week 2-3)
CE Plus pre-certification remediation plan. TPRM pack scaffolded. ICO + customer notification workflow documented.
Operate (ongoing)
24/7 monitoring + monthly leadership reporting + on-call for incident triage aligned to government-customer notification clock.
Sectors we protect
Cybersecurity consulting built for Westminster's government-supplier reality
Free 30-minute consultation for principals, COOs and CIOs at SW1 firms. We assess CE Plus pre-certification gaps, government-customer breach notification workflow, and supplier posture pack.
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