How BCG works

The UK Treasury Five-Case-Model requires business cases to explain the strategic, economic, commercial, financial and management case for investment in three stages: Strategic Outline Case (SOC), Outline Business Case (OBC) and Full Business Case (FBC).

Unlike generic AI tools, BCG applies structured option appraisal, enforces Green Book logic, and ensures decisions are evidence-based.

The user uploads project information. BCG suggests written and numerical content for each section of the business case. The user-friendly interface enables users to ask questions, examine evidence and re-draft, as required.

Users approve each section of the business case so they always remain in control.

BCG’s multi-user feature enables colleagues to read, interact with and edit business case in app with traceable edit and history function to ensure version control.

BCG provides easy edit, save and export functions to word/excel.

BCG generates written content and supporting evidence for each section of the business case, with every claim linked to its source, so users can verify the basis for each recommendation.

Ask BCG enables users to interrogate the draft at any point. Users can Ask BCG where a specific number comes from, request an explanation of the rationale behind a piece of evidence, or instruct BCG to shorten a section or redraft it with a different emphasis.

This gives users full confidence in the content they are approving, while retaining the flexibility to shape the business case to reflect their own judgement and priorities.

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Identifying and assessing options is a core requirement of the business case.

BCG follows the HM Treasury Green Book options framework, generating options under each category of choice and assesses against the project's Critical Success Factors and suggests a shortlist of options.

BCG takes human direction at every step. Using Ask BCG Users can add, remove or amend options and refine the analysis. Using BCG for options workshops facilitates stakeholder agreement in real time.

Every assumption, data point and conclusion is traceable, providing a clear audit trail for scrutiny and approval.

Outputs include structured cases, option appraisals, cost and benefit tables, and clear value for money conclusions.

BCG In Actionn

Option Appraisal - Longlist to shortlist

Our Work

Frequently Asked Questions

  • BCG guides users through the UK HM Treasury Five Case Model step-by-step. Upload documents, BCG generates drafts content, refine using Ask BCG, and export a compliant business case to word and excel.

  • Public sector and Arm’s Length Bodies (ALB’s).

    Research organisations, NHS bodies, not-for-profits and charities where fast, compliant business cases are essential.

    Private sector organisations that use the Five Case Model as a robust best practice for investment appraisal.

  • Unlike generic AI assistants - such as Copilot, BCG blends decades of business case expertise with cutting-edge AI technology.

  • Business cases that normally take months can be produced in days with AI-powered drafting and compliance support.

  • BCG is aligned with HM Treasury’s Five Case Model and Green Book guidance.

    Strict guardrails ensure consistent, high-quality outputs aligned with best-practice.

  • Yes - BCG is hosted in UK AWS regions, GDPR-compliant, encrypted end-to-end, and aligned with NCSC Cloud Security Principles.

    BCG can provide security compliance certification on request.

  • Contact our team to arrange a demo and discuss your requirements.

    BCG onboarding will provide you with training and support tailored to your organisation.