Programme enters cutover to Milestone 10 (M10) with approval at Extraordinary Programme Steering Group (ePSG)

At the Extraordinary Programme Steering Group (ePSG) meeting on Friday 19 September 2025, the Senior Responsible Owner (SRO) approved Tier 3 Milestone 0035: PSG to approve that the Programme can enter M10. This confirmation means that the M10 Cutover weekend will proceed as scheduled. 

M10 is a Tier 1 Milestone – Central systems ready for migrating Meter Point Administration Numbers (MPANs) – and this approval represents a significant step towards achieving this critical milestone on the path to Go-Live. 

To keep Programme participants informed, the Programme will provide further updates on cutover progress as follows: 

• Sunday 21 September 2025 – update on the progress of M10 Cutover activities across the weekend 
• Monday 22 September 2025 – update on the monitoring of operations during the initial post-cutover phase, including key Programme observations 

As a reminder, formal M10 and M13 ratification will take place at an Extraordinary PSG meeting at 14:00–15:00 on Wednesday 24 September 2025. Following this, the Programme will issue an official update to all industry participants. 

If you have any questions, please email the Programme Party Coordinator (PPC) team at PPC@mhhsprogramme.co.uk