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Critical National Infrastructure for Governments

The UK’s Critical National Infrastructure (CNI) – from energy grids and water systems to transport, communications, space, and defence – forms the backbone of national life. Disruption in any one part can cascade across interconnected systems, threatening human life, economic stability, and public trust.

In an era of geopolitical volatility, hybrid threats, and accelerating technological change, resilience is no longer just a technical issue but a strategic imperative. The UK Government has already taken significant steps: mapping interdependencies through the CNI Knowledge Base, bolstering defences via the Telecommunications (Security) Act and the National Cyber Strategy, and expanding protective capacity through the National Cyber Security Centre and National Protective Security Authority. Yet as digitalisation, AI, and the Internet of Things expand the attack surface, new vulnerabilities continue to emerge.

The Critical Questions of Interest

  • How resilient are current government resilience frameworks to cascading cross-sector disruptions?
  • What balance of responsibility should lie between central government, devolved administrations, regulators, and private operators?
  • How can legislative reform and operational preparedness be aligned with real-world interoperability in a crisis?
  • Are existing cyber protections adequate against fast-adapting, machine learning–enabled threats?
  • How can the government maintain public trust during prolonged outages, cyber intrusions, or infrastructure failures?
  • What does an effective “whole-of-society” resilience model look like in practice?

Uncovering Insights

i3 Gen’s CNI x Government wargames place leaders at the centre of interconnected crises, where physical, digital, and environmental pressures converge. Participants confront dilemmas under conditions of uncertainty and incomplete information, testing not only their sectoral response but also their ability to coordinate across agencies, regulators, and private operators.

Dynamic scenario design introduces cascading second- and third-order effects – communications blackouts, cyber intrusions, infrastructure failures – forcing decision-makers to grapple with the same complexity they would face in the real world. Structured expert adjudication ensures that outcomes remain realistic, evidence-based, and sector-specific.

In the Game, Teams Grapple With:

  • Coordinating cross-government and private-sector responses to multi-domain cyber and physical threats.
  • Managing interoperability challenges when information-sharing systems and command chains break down.
  • Restoring public trust and delivering coherent communications during outages or cascading failures.
  • Deciding whether to prioritise efficiency, speed, or resilience under extreme pressure.
  • Balancing national security demands with commercial, regulatory, and political pressures.

The Impact

Crises will not wait for government frameworks to adapt. Wargaming provides leaders with the opportunity to stress-test crisis strategies, expose hidden vulnerabilities, and strengthen interoperability before real shocks occur.

The result is sharper preparedness, clearer lines of accountability, and more resilient governance – ensuring that essential services remain protected, public trust is preserved, and government can act decisively when it matters most.

Resilience isn’t built on paper. Rehearse your strategy today

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