GeraClinic / Hospital Mortality Index / Chelsea and Westminster Hospital NHS Foundation Trust
Chelsea and Westminster Hospital NHS Foundation Trust — hospital mortality (SHMI)
The NHS Summary Hospital-level Mortality Indicator (SHMI) for Chelsea and Westminster Hospital NHS Foundation Trust for November 2024 to October 2025: a SHMI of 0.755 (index 75.5), banded lower than expected by NHS England.
What is the hospital mortality (SHMI) for Chelsea and Westminster Hospital NHS Foundation Trust?
For November 2024 to October 2025, Chelsea and Westminster Hospital NHS Foundation Trust had an NHS SHMI of 0.755 (Gera Hospital Mortality Index 75.5), banded "lower than expected": 1,710 deaths observed against 2,260 expected — 24.5% below the national expectation. This is real NHS open data and a "smoke alarm", not a measure of care quality.
What “lower than expected” means here
The number of deaths was lower than expected given the patients treated. NHS England cautions this should not automatically be read as good care.
The SHMI is NOT a measure of quality of care. NHS England is explicit that a higher-than-expected SHMI should be treated as a "smoke alarm" — a prompt to investigate, not evidence of poor care — and that an "as expected" or "lower than expected" value should not be read as proof of good care. Many factors outside a hospital’s control (local population health, the prevalence of palliative-care coding, deaths in hospices) affect the figure.
An index of 75.5 means Chelsea and Westminster Hospital NHS Foundation Trust was 24.5% below the national expectation for this period. The index is the official SHMI (0.755) multiplied by 100; every figure is the real published NHS number, and the method is set out in the methodology.
SHMI value
0.755
Lower than expected
Mortality Index
75.5
baseline 100
Observed deaths
1,710
in hospital / within 30 days
Expected deaths
2,260
modelled by the NHS
Difference
-550
observed − expected
Discharges
84,945
finished provider spells
vs expectation
24.5% below
relative to England
NHS banding
Band 3
Lower than expected
In plain English
Over November 2024 to October 2025, Chelsea and Westminster Hospital NHS Foundation Trust recorded 1,710 deaths in hospital or within 30 days of discharge, against 2,260 the NHS model expected given the patients it treated across 84,945 completed stays. That is 550 fewer deaths than expected — a SHMI of 0.755, which the NHS bands as lower than expected. Because the expected figure already adjusts for how sick and how old the patients were, the comparison is with what would be typical for a similar case mix in England — but it still does not measure the quality or safety of care.
Chelsea and Westminster Hospital NHS Foundation Trust: mortality (SHMI) FAQs
- What is the SHMI for Chelsea and Westminster Hospital NHS Foundation Trust?
- For November 2024 to October 2025, the SHMI for Chelsea and Westminster Hospital NHS Foundation Trust was 0.755 (Gera Hospital Mortality Index 75.5), banded "lower than expected" by NHS England. There were 1,710 observed deaths against 2,260 expected — 550 fewer deaths than expected, or 24.5% below the national expectation. This is the real published NHS figure, not a measure of care quality.
- Does Chelsea and Westminster Hospital NHS Foundation Trust's SHMI mean its care is good?
- No. NHS England is explicit that the SHMI is not a measure of quality of care. A lower-than-expected value should not automatically be read as good care. Local population health and how palliative care is coded also affect the figure. Use it to ask informed questions, not as a verdict.
- How many patients does Chelsea and Westminster Hospital NHS Foundation Trust treat?
- In the November 2024 to October 2025 SHMI period, Chelsea and Westminster Hospital NHS Foundation Trust had 84,945 finished provider spells (roughly, completed hospital stays), from which the SHMI counts deaths in hospital or within 30 days of discharge. The expected-deaths figure (2,260) is modelled by the NHS from the characteristics of those patients.
See every trust and how to read the numbers
Chelsea and Westminster Hospital NHS Foundation Trust is one of 118 acute NHS trusts in the SHMI. Compare it against the full sourced table, and read the methodology before drawing any conclusion.
Other trusts
Source
Every figure for Chelsea and Westminster Hospital NHS Foundation Trust on this page is the real published NHS SHMI value; the Gera Hospital Mortality Index is the official SHMI multiplied by 100 and no trust is re-banded. Full method on the methodology page.
Contains public sector information published by NHS England and licensed under the Open Government Licence v3.0. Source: Summary Hospital-level Mortality Indicator (SHMI) — Deaths associated with hospitalisation, England, November 2024 - October 2025 (November 2024 to October 2025, published 12 March 2026).
Contains public sector information published by NHS England and licensed under the Open Government Licence v3.0. Underlying data: SHMI — Deaths associated with hospitalisation, England, November 2024 – October 2025. NHS methodology: About the SHMI.
GeraClinic is a private telemedicine service and is not part of, or affiliated with, the NHS, and has no connection to Chelsea and Westminster Hospital NHS Foundation Trust. This page presents open NHS data for information only; it is not clinical advice and not a measure of the quality or safety of care.