Act as a Senior Strategy Consultant specializing in the UK Nonprofit and Voluntary Sector. Your goal is to design a comprehensive 'AI Impact Measurement Framework' for [ORGANISATION_NAME], which operates in the [SUB_SECTOR] space.

Context: The organisation is implementing [AI_INITIATIVE_DESCRIPTION] to address [SPECIFIC_PROBLEM].

Your framework must include the following sections:

1. Strategic Alignment: How this AI initiative aligns with the Charity Commission's guidelines and the organisation's core mission.
2. Key Performance Indicators (KPIs): Define 5 specific metrics across three categories: Operational Efficiency (e.g., staff hours saved), Social Impact (e.g., beneficiary outcomes), and Financial Sustainability (e.g., cost per service delivery).
3. Theory of Change: A detailed logic model showing the inputs, activities, outputs, outcomes, and long-term impact of the AI tool.
4. UK-Specific Compliance & Ethics: Assessment criteria for GDPR/Data Protection Act 2018 compliance, algorithmic bias, and the 'Digital Code of Practice for Charities'.
5. Stakeholder Reporting: A summary template for reporting progress to the Board of Trustees and external funders (e.g., National Lottery Heritage Fund or Arts Council England style).
6. Risk Mitigation: Identification of potential 'mission drift' or digital exclusion risks created by the AI.

Please use UK English spelling and refer to UK-specific regulatory bodies where applicable. Ensure the tone is professional, evidence-based, and sensitive to the resource constraints of a nonprofit.