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Is the NHS Getting Better at Treating Sepsis?

Sepsis kills around 48,000 people a year in the UK, but survival rates have risen from 73% to 81% in a decade as faster recognition and treatment take hold.

Sepsis occurs when the body's response to infection damages its own organs. It remains the leading cause of preventable death in NHS hospitals, killing more people each year than bowel, breast, and prostate cancer combined.[1] But outcomes are improving. The national Sepsis-6 care bundle — a checklist of six interventions to be delivered within the first hour — has been adopted across 95% of acute NHS trusts, and compliance has risen from 42% in 2016 to 72% in 2025. Median time from presentation to intravenous antibiotics has halved, from 92 minutes to 44 minutes over the same period.[3]

The improvements are real but unevenly distributed. Survival rates in the South West now exceed 84%, while the North East sits at 77% — a gap that maps closely onto broader health inequalities, staffing ratios, and emergency department crowding.[2] The 2020 pandemic disrupted progress: compliance fell, delayed presentations increased, and deaths spiked to nearly 55,000. Recovery since then has been steady. The UK Sepsis Trust estimates that achieving 90% bundle compliance nationally could prevent an additional 5,000 deaths per year. The data shows a health system that has learned to recognise sepsis far faster than it once did — but has not yet closed the gap between its best and worst performers.

There is also a quiet structural success story. The introduction of NEWS2 (National Early Warning Score) across all acute trusts means that deteriorating patients are now flagged automatically, triggering sepsis screening pathways before clinical suspicion alone would have caught them.[4] This systematic approach — treating sepsis as a process failure rather than a diagnostic failure — is the single most important change in the last decade.

Annual sepsis deaths

48,0002025

Down 12% from 2020 peak of 54,800

UK Sepsis Trust / NHS England, 2025

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Sepsis survival rate

81.2%2025

Up 8.0 pts since 2014

ICNARC Case Mix Programme, 2025

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Sepsis bundle compliance

72%2025

Target: 90% · up from 42% in 2016

NHS England · CQUIN Sepsis Indicators, 2025

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Annual sepsis-related deaths, UK, 2014–2025

Deaths peaked in 2020 during the pandemic and have since fallen steadily.

Source: UK Sepsis Trust / NHS England, Sepsis-related mortality estimates, Updated annual

Sepsis survival rate (%), UK, 2014–2025

Survival has risen from 73% to 81% over the last decade, driven by faster recognition and treatment.

Source: ICNARC, Case Mix Programme — sepsis admissions, Updated annual

Median time from presentation to IV antibiotics (minutes), 2016–2025

Down from 92 to 44 minutes. Target: under 60 minutes.

Source: NHS England, CQUIN Sepsis Indicators, Updated annual

Sepsis survival rate by NHS region (%)

A 6.7 percentage point gap separates the best- and worst-performing regions.

Source: ICNARC Case Mix Programme — regional sepsis outcomes, 2025

NEWS2 early warning system preventing avoidable deaths

95%of acute trusts

The National Early Warning Score 2 (NEWS2) system is now used across 95% of NHS acute trusts. It automatically flags deteriorating patients, triggering sepsis screening before clinical suspicion alone would catch them. Combined with the Sepsis-6 care bundle, this systematic approach has helped halve the time from presentation to IV antibiotics — from 92 minutes in 2016 to 44 minutes in 2025. The UK Sepsis Trust estimates that reaching 90% bundle compliance nationally could prevent a further 5,000 deaths per year.

Source: NHS England — CQUIN Sepsis Indicators, 2025. ICNARC Case Mix Programme. UK Sepsis Trust.

  1. [1]UK Sepsis Trust / NHS EnglandSepsis-related Mortality Estimates, 2025. Approx 48,000 deaths/year; peaked at 54,800 in 2020; down 12% from peak
  2. [2]ICNARCCase Mix Programme — Sepsis Admissions, 2025. Survival rate risen from 73% (2014) to 81% (2025); South West 84% vs North East 77%
  3. [3]NHS EnglandCQUIN Sepsis Indicators, 2025. Sepsis-6 bundle compliance 72% (up from 42% in 2016); median time to IV antibiotics halved to 44 minutes
  4. [4]NHS EnglandNEWS2 National Early Warning Score Implementation, 2025. NEWS2 adopted across 95% of acute trusts; automatic deterioration flagging triggers sepsis screening

Sources & Methodology

UK Sepsis Trust — annual sepsis-related mortality estimates. Includes deaths where sepsis was a primary or contributing cause on the death certificate.

ICNARC (Intensive Care National Audit & Research Centre) — Case Mix Programme. Survival rates based on critical care admissions with sepsis as the primary reason for admission.

NHS England — CQUIN (Commissioning for Quality and Innovation) Sepsis Indicators. Bundle compliance and time-to-antibiotics data from acute trust returns.

Methodology note: Deaths figures include all sepsis-associated mortality (ICD-10 codes A40-A41 plus implicit sepsis). Survival rates refer to critical care survival to hospital discharge. Regional variation reflects NHS England commissioning regions. Updated annually.

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