Guidance
Electromagnetic fields
Guidance on public exposure to electromagnetic fields.
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We are all exposed to electromagnetic fields from a variety of natural and artificial sources.
People’s exposures during their everyday lives tend to be dominated by contributions from manmade sources.
Electromagnetic fields have photon energies that are many orders of magnitude below that at which ionisation occurs or chemical bonds in cells are disrupted. Because of this, electromagnetic fields are often termed as “non-ionising radiation”.
Historical reports on this subject can be accessed via the UK National Archives.
Updates to this page
Published 14 May 2026
Last updated 15 May 2026
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Added clarification that content reflects existing UKHSA guidance and has no new material.
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First published.