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MOSL is the market operator of England's non-household water market and is proud to work alongside our water company members to support them driving efficiency and innovation in water.


Market Codes

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The latest version of the market codes, the change process and consultations on changes.


Panel & Committees

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What the Panel does and meeting details, member biogs and panel committees



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Everything to do with the core IT system that underpins MOSL’s role within the new water market


Market Performance

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Key charts and information outlining market performance including switching and settlement

Join the MOSL team now!


We are moving our head office to Southampton and have some exciting opportunities to join our team. To find out more about our current vacancies and some of the benefits we offer, visit our dedicated Careers page.

You can also found out more about the market and MOSL, by visiting the About us page.



Market Performance Operating Plan October 2018

Today we’ve published an updated version of the Market Performance Operating Plan

Panel Plan 2018/2019

Today the Panel has published its finalised Panel Plan

Planned outage to the CMOS production environment

Note that a technical update will be applied to the infrastructure supporting the CMOS production environment during the maintenance window on Saturday 6 October and Saturday 13 October

MOSL Market Focus August 2018

Today we've published the August edition of Market Focus, our monthly update to our members



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