Crown Prosecution Service Accelerates Legal Document Review with AI Case Explorer
The UK Crown Prosecution Service (CPS) partnered with NTT DATA to deploy a generative AI-based 'Case Explorer' system to automate and enhance the legal document review process. Leveraging Microsoft Azure OpenAI technology and Microsoft 365 Copilot, the solution addressed the challenge of handling vast volumes of legal documents that can extend to thousands of pages for a single case. This RAG-powered, agentic workflow system intelligently surfaces the most critical information, improving the speed, accuracy, and efficiency of reviews by legal professionals. This real-world implementation delivered notable productivity gains, transforming previously manual, time-consuming legal procedures at the CPS.
- Organization
- Crown Prosecution Service
- Industry
- Legal
- Location
- United Kingdom
- Published
- March 2025
Reported outcomes
Strategic outcomes
Why do we believe this deployment?Customer identity, provider attribution, maturity, and source checks
- Customer
- Crown Prosecution Service
- Provider
- Microsoft
- Maturity
- Production
- Linked source
- services.global.ntt
Developed and deployed GenAI-based 'Case Explorer' using Microsoft Azure OpenAI
Primary read
Use case focus
Showing 3 of 4
- 1Legal Document Review Automation
- 2AI-driven Case Fact Discovery
- 3Agentic Legal Assistant
- Legal professionals burdened by reviewing thousands of pages for each case.
- Manual processes slowed down review speed and increased risk of oversight.
- Growing volume and complexity of case documents created resource strain.
- Need for faster, more accurate legal fact-finding.
- Developed and deployed GenAI-based 'Case Explorer' using Microsoft Azure OpenAI.
- Integrated Microsoft 365 Copilot for intelligent content discovery.
- Employed retrieval-augmented generation (RAG) and agentic workflows to highlight key information.
- Automated identification and surfacing of crucial case facts with AI.
- Significantly increased productivity and workflow efficiency for legal professionals.
- Faster and more accurate legal document reviews.
- Manual, time-intensive processes streamlined or eliminated.
- Enabled better allocation of legal resources.
Architecture
The Case Explorer leverages Microsoft Azure OpenAI Service for text understanding and generation, utilizes retrieval-augmented generation (RAG) to pull relevant information from expansive case files, and integrates Microsoft 365 Copilot to surface insights within legal documents. Agentic AI workflows orchestrate the automation and prioritization of content delivered to CPS staff.
Implementation partners1
Sources & evidence1
- Customer explicitly identified
- Deployment status explicitly supported
- Technical implementation details available
- Recent evidence check available
- Last evidence check: Jun 1, 2026.
The case's original source is still reachable.
- Cited source last checked Jun 1, 2026 — ok (0/1 broken).
Measures whether this deployment's public evidence persists — not whether the system is still in production.
AI-generated summary. Verify important details with the linked sources before relying on this case.
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