About us
The UK Health Security Agency (UKHSA) exists to protect people from health threats. We prevent and reduce the harm caused by infectious diseases, chemicals, radiation, the health effects of climate change and a range of environmental hazards including air quality.
UKHSA provides scientific and operational leadership, working with local, national and international partners to protect the public’s health and build the nation’s health security capability.
For most of UKHSA’s work, our remit covers England as health protection is largely a devolved policy area. We hold some UK-wide responsibilities on reserved matters where the UK government has retained policy responsibility.
UKHSA recognises the cross-border nature of health threats and works in close partnership with the governments and public health bodies of Wales, Scotland and Northern Ireland on common challenges.
UKHSA Strategy 2026 to 2029 outlines our ambition and priority deliverables for the next 3 years to protect people from current and future health threats.
UKHSA is an executive agency, sponsored by the Department of Health and Social Care.
Corporate information
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- Modern slavery statement
- Our governance
- Statistics at UKHSA