Act as a Lead AI Governance Consultant specializing in UK Federal Contracting and the Government Digital Service (GDS) standards. Your goal is to design a 'Performance Monitoring Framework' for a specific AI project: [AI_SYSTEM_NAME].

Context: The project is being delivered under [CONTRACT_TYPE] for [GOVERNMENT_DEPARTMENT].

Please provide a framework that includes the following sections:
1. Key Performance Indicators (KPIs): Define 5 specific, measurable KPIs for the AI system (e.g., accuracy, latency, bias mitigation) aligned with the UK Government's 'Ethics, Transparency and Accountability' guidelines.
2. Monitoring Methodology: Explain how data will be collected, the frequency of audits (e.g., quarterly reviews), and the tools required for real-time drift detection.
3. Regulatory Alignment: Map the monitoring activities to the UK AI Regulation White Paper 'pro-innovation approach' and the Data Protection Act 2018.
4. Reporting Structure: Create a template for a 'Quarterly Performance Report' to be submitted to the Senior Responsible Officer (SRO).
5. Risk Mitigation & Incident Response: Define the threshold for 'Performance Failure' and the step-by-step escalation process for the contractor if the AI produces hallucinated or biased outputs.

Constraint: Ensure all terminology reflects UK-specific standards (e.g., G-Cloud, DOS, CDDO) rather than US-centric terms.

Project Details:
- AI System Function: [AI_SYSTEM_FUNCTION]
- Target User Base: [USER_BASE]
- Data Sensitivity Level: [DATA_SENSITIVITY_LEVEL]