“The UK has quietly downgraded Biorisk Worst-Case Scenarios >5x in a year” by Chris Clay🔸

<p> The National Risk Register is a morbidly fascinating document I've stumbled across recently. It aims to provide the UK Government's public-facing opinion on what the most serious risks facing the UK are. It's unclear how much this document is used in justifying internal decisions made across UK Government. However, one document its cited in is the Pandemic Preparedness Strategy.</p><p> One of the headline figures of this register is the Impact-Likelihood matrix across all risks. The important numbers to pay attention to for this are:<br> Larger scale CBRN attacks (Chemical, Biological, Radiological or Nuclear) - 7<br> Pandemics - 54 (2025), 56 (2026)</p><p> A couple of other things to note:</p><ol> <li> Likelihood represents the believed chance of this event occurring over the next 5 years.</li><li> A catastrophic impact is defined as one that causes &gt;£10 billion in damage or causes &gt;1000 deaths. On a side note, the classification of this upper bound is clearly too low. As an obvious example, COVID killed 200,000 people in the UK, so it should be at least two orders of magnitude above the upper limit.</li></ol><p> Here is the National Risk Register's risk matrix from 2025:</p><p> Here is the National Risk Register's risk matrix from 2026:<br> [...]</br></p></br></br></p> <p>---</p>

<p><b>First published:</b><br/>

September 13th, 2026 </p>

<p><b>Source:</b><br/>

<a href="https://forum.effectivealtruism.org/posts/hFAushcPhTwJiy9u9/the-uk-has-quietly-downgraded-biorisk-worst-case-scenarios?utm_source=TYPE_III_AUDIO&utm_medium=Podcast&utm_content=Source+URL+in+episode+description&utm_campaign=ai_narration" rel="noopener noreferrer" target="_blank">https://forum.effectivealtruism.org/posts/hFAushcPhTwJiy9u9/the-uk-has-quietly-downgraded-biorisk-worst-case-scenarios</a> </p>

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<p>Narrated by <a href="https://type3.audio/?utm_source=TYPE_III_AUDIO&utm_medium=Podcast&utm_content=Narrated+by+TYPE+III+AUDIO&utm_term=ea_forum&utm_campaign=ai_narration" rel="noopener noreferrer" target="_blank">TYPE III AUDIO</a>.</p>

<p>---</p><div style="max-width: 100%";><p><strong>Images from the article:</strong></p><a href="https://res.cloudinary.com/cea/image/upload/f_auto,q_auto/v1/mirroredImages/hFAushcPhTwJiy9u9/p35ekgsbz0poahrb82hu" target="_blank"><img src="https://res.cloudinary.com/cea/image/upload/f_auto,q_auto/v1/mirroredImages/hFAushcPhTwJiy9u9/p35ekgsbz0poahrb82hu" alt="Risk assessment matrix "Risk assessment methodology and matrix" plotti