Maternity Outcomes Signal System (MOSS) standard operating procedures

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The Maternity Outcomes Signal System (MOSS) was developed by NHS England in response to the East Kent Reading the signals report.

These standard operating procedures, along with the accompanying 8 annexes, explain the responsibilities of trust boards and maternity services, ICBs, regions and the national team in relation to MOSS.

Contents

  1. MOSS standard operating procedures
  2. Annex 1 – MOSS critical safety check
  3. Annex 2 – MOSS access guide
  4. Annex 3 – MOSS chart interpretation guide
  5. Annex 4 – Methodology and data sources
  6. Annex 5 – FAQs
  7. Annex 6 – Standard escalation example
  8. Annex 7 – What is a safety signal system?
  9. Annex 8 – Glossary
  10. Annex 9 – Critical safety check (drill version)

MOSS standard operating procedures

Link

MOSS standard operating procedures

MOSS standard operating procedures

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 1 – MOSS critical safety check

Document

MOSS critical safety check

MOSS critical safety check

  • Microsoft Word
  • 62 KB
  • 11 pages

Summary

MS Word template

Published 25 November 2025

Annex 2 – MOSS access guide

Link

Annex 2 – MOSS access guide

Annex 2 – MOSS access guide

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 3 – MOSS chart interpretation guide

Link

Annex 3 – MOSS chart interpretation guide

Annex 3 – MOSS chart interpretation guide

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 4 – Methodology and data sources

Link

Annex 4 – Methodology and data sources

Annex 4 – Methodology and data sources

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 5 – FAQs

Link

Annex 5 – FAQs in MOSS

Annex 5 – FAQs in MOSS

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 6 – Standard escalation example

Link

Annex 6 – Standard escalation example

Annex 6 – Standard escalation example

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 7 – What is a safety signal system?

Link

Annex 7 – What is a safety signal system?

Annex 7 – What is a safety signal system?

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 8 – Glossary

Link

Annex 8 – Glossary

Annex 8 – Glossary

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 9 – Critical safety check (drill version)

Document

Annex 9 – Critical safety check (drill version)

Annex 9 – Critical safety check (drill version)

  • Microsoft Word
  • 64 KB
  • 10 pages

Summary

MS Word format. Published 10 February 2026.