Many growing companies accumulate multiple ISO 27001 certifications as they expand through new business units and acquisitions. Each team builds its own Information Security Management System (ISMS), often in isolation. While this approach can work in the short term, over time it creates unnecessary complexity, duplicated effort, and escalating costs.
This was the challenge faced by one of our clients: a successful technology group operating several semi‑autonomous business units, each with its own ISO 27001 certification.
The challenge
Siloed ISMS implementations: Each business unit maintained separate security documentation, risk assessments, and controls. Duplicated overhead: Multiple management reviews, internal audits, and external certification audits strained resources. Limited visibility: Senior leadership lacked a single view of risks, controls, and security performance across the group. Higher costs: Audit and certification fees multiplied with every separate ISMS.
The result was a fragmented approach to security governance that made it harder to manage risk consistently across the organisation.
The solution: a single, centralised ISMS
TruContext worked with the client to consolidate these separate ISO 27001 certifications into a single, centrally managed ISMS that served the entire group. The programme included:
Mapping common controls across business units to remove duplication. Harmonising policies and risk management processes to create a consistent security baseline. Engaging stakeholders from each business unit to ensure local requirements were met while aligning with group‑wide objectives. Implementing central oversight to provide leadership with a single, accurate picture of security posture and risk. Preparing for a group‑wide certification audit with minimal disruption to day‑to‑day operations.
The results
Reduced operational overhead: A single ISMS eliminated duplicated documentation, processes, and management reviews. Lower audit costs and business disruption: Fewer audits meant reduced certification fees and less time pulled away from core work. Greater cross‑business visibility: Leadership gained a unified view of risks and controls, enabling more effective governance. Optimised security controls: Central management allowed for rationalisation of tools and processes, lowering security spend. Stronger risk management: Consistent approaches to risk identification, assessment, and treatment improved decision‑making.
Security in context with reality
Consolidating multiple ISO 27001 certifications isn’t just about reducing costs. It’s about creating a security management system that truly supports the business; efficient, transparent, and aligned with real‑world objectives.
At TruContext, we help organisations bring their security programmes back into context, removing unnecessary complexity and enabling smarter governance.