The Clock: 9 July 2025

◆ Published: 09/07/2025


The Clock newsletter provides participants with updates and key information to support delivery of the MHHS Programme. The Clock will signpost you to events, plans, reports and documents to assist in planning, design, development, testing and delivery.

In this issue of The Clock we update you on:

  • Programme News
    • Thank you for responding to Readiness Assessment 5/6  
  • Participant Checklist
    • REMINDER: M10/M11 Programme Cutover Plan Consultation  
    • REMINDER: M10/M11 Participant Cutover Plans  
    • REMINDER: Systems Integration Testing (SIT) Non-Functional Exit Reports 
    • NEW! Overarching SIT Functional & Migration Exit Reports Industry Review
    • REMINDER: Data Cleanse Plan: Supplier Exception Resolution activity   
    • NEW! Change Request CR063 to be issued for Impact Assessment today 
    • REMINDER: Milestone 8 (M8) Code Changes Artefacts issued for formal Code Body consultation 
  • MHHS Qualification Updates
    • REMINDER: Facilitating Engagement between Suppliers & Agents 
    • REMINDER: Initial Qualification Assessment Document (QAD) Submission for Wave 1 participants 
    • REMINDER: Qualification Testing (QT) Entry Checkpoints 1 and 2 for Wave 1 participants  
    • NEW! Non-SIT Supplier & Agent Qualification Testing Test Case: Batch 3 Housekeeping Consultation 
    • NEW! Qualification Approach & Plan Annex 4 Guidance  
    • NEW! Where to find the latest Qualification updates 
  • Upcoming events
    • Upcoming Governance Meetings 
    • REMINDER: MHHS Webinar: Kestrel Dress Rehearsal 2: 14 July 2025   
    • REMINDER: Qualification - Promotion to Production Webinar: 15 July 2025  
    • Systems Integration Testing Advisory Group (SITAG): 16 July 2025 
    • Qualification Advisory Group (QAG): 17 July 2025  
    • NEW! Defect Logging and Triage Guidance Webinar: 21 July 2025 
  • What happened last week?
    • Programme Steering Group (PSG): 2 July 2025 
  • Elexon & Data Integration Platform (DIP) Manager Update
    • REMINDER: Industry Standing Data (ISD) changes at MHHS Programme Milestone 10 (M10) 
    • REMINDER: Data Integration Platform (DIP) Onboarding for Qualification Wave 1 participants  
    • NEW! DIP guidance notes published 
    • REMINDER: Confidential Assurance Reporting Platform (CARP) Update 
  • Retail Energy Code (REC) Update
    • REMINDER: MHHS Electricity Enquiry Service (EES) Live Demo: 15 July 2025  
    • REMINDER: REC Release for MHHS Milestone 8 (M8) Pre-release Webinar: 16 July 2025 
    • REMINDER: REC Code Manager Legacy Assurance Director Assertion 
    • NEW! Qualification Assessment Document: Letter of delegated authority 

The Clock

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