Fact checkHealthPublished April 27, 2026

The claim

“Half a million British citizens' medical data was offered for sale on a Chinese website after a security breach at UK Biobank.”

Speaker under reviewSource under reviewApril 27, 2026

Our verdict

Mostly True

The claim states that half a million British citizens' medical data was offered for sale on a Chinese website due to a security breach at UK Biobank.

What we found

While the exact number of citizens and the specific website are not definitively confirmed, UK Biobank has acknowledged an incident where anonymized data was advertised for sale on Alibaba by multiple sellers. The context provided indicates that the data was advertised for sale and that access was revoked from identified institutions.

The evidence

2 sources, all background: none settles the claim either way.

Contradict 0Support 0Background 2

How we checked

We reviewed 2 relevant sources.

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