In October 2024, MOSL issued its new trading party survey which gives equal focus to MOSL’s core services and delivery of our improvement programmes.

MOSL would like to thank those trading parties who responded to this survey, overall, respondents gave MOSL's performance as a market operator an average score of 3.8 (on a 1-5 scale from ‘poor’ to ‘excellent’).  

84% of respondents rated MOSL’s Overall Performance as four or above

The below identifies the overall scores across our four service areas, Improvement Programmes and engagement and communication.

Core Services

  • Market Operations core service an average of 3.8
  • Market Assurance core service an average of 3.4
  • Market Improvement core service an average of 3.5
  • Governance and Support Services core service an average of 4

Improvement Programmes

  • Satisfaction with the MPF Reform Improvement Programme an average of 3.4
  • Satisfaction with the Strategic Metering Improvement Programme an average of 3.8
  • Satisfaction with the Data Assurance Improvement Programme an average of 3.4
  • Satisfaction with the Bilaterals Improvement Programme an average of 4

Engagement and Communication

  • Engagement and Communications an average of 3.8

For a summary of the responses, please see MOSL’s summary response document and for full transparency, we have published the full anonymised report.

If you have any suggestions on how we can continue to improve the survey for 2025/26 or questions regarding the current survey, please contact This email address is being protected from spambots. You need JavaScript enabled to view it..

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