The Crown Consulting Group

Retiring legacy systems in the public sector is complex and high risk. In this case study, we share how we supported a central government organisation to decommission an outdated platform while protecting service continuity, safeguarding data and strengthening security. Through structured discovery, phased migration and close collaboration, we reduced operational risk and enabled long-term digital transformation.

Legacy system replacement is rarely a single technical decision. This case study explores how a service-led, evidence-based approach helped a public sector organisation assess risk, understand user impact, and design a pragmatic, phased roadmap for modernisation — while protecting live services and building internal capability.

Migrating a legacy public sector system to a secure, modern cloud solution with minimal disruption, improved performance, and long-term organisational capability.

How our consultancy helped a government department integrate AI responsibly — ensuring fairness, transparency, and accountability across digital services.

Across the public sector, there is growing pressure to “do something with AI”. Yet, many organisations face uncertainty about what that means in practice. The client’s leadership team had received multiple proposals suggesting AI could automate decision-making, streamline casework, and reduce manual processing. However, they lacked a clear framework for assessing these claims or understanding whether their data, infrastructure, and workforce were ready to support such technol

Case study: How our consultancy used AI automation to cut costs, reduce wait times, and improve citizen experience in a government service.

Helping a government team overcome complex procurement barriers to secure value for money and deliver better public digital services.

How our consultancy helped a government department streamline digital procurement — reducing delays and improving delivery, without compromising compliance.