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            <identifier scheme="http://www.sec.gov/CIK">0001828185</identifier>
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            <endDate>2025-12-31</endDate>
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    <dei:EntityRegistrantName contextRef="c0" id="ixv-64">BARINTHUS BIOTHERAPEUTICS PLC</dei:EntityRegistrantName>
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    <ecd:AwardTmgMnpiDiscTextBlock contextRef="c0" id="ixv-4910">&lt;div style="text-indent:20pt; margin-top:8pt; width:456pt; line-height:11.5pt;"&gt; &lt;span style="letter-spacing:0.2pt;"&gt;It is the policy of our Board of Directors and our Compensation Committee to not take material non-public information into account when determining the timing of equity awards in order to take advantage of a depressed stock price or an anticipated increase in stock price. Similarly, it is our practice not to time the release of material nonpublic information based on equity award grant dates or for the purpose of affecting the value of executive compensation. &lt;/span&gt; &lt;/div&gt;&lt;div style="text-indent:20pt; margin-top:8pt; width:456pt; line-height:11.5pt;"&gt; &lt;span style="letter-spacing:0.2pt;"&gt;Our Compensation Committee generally grants annual equity awards, including stock option grants to our named executive officers, in the first quarter of each fiscal year. In addition, new hires receive stock option grants at the time of their hiring. &lt;/span&gt; &lt;/div&gt;</ecd:AwardTmgMnpiDiscTextBlock>
    <ecd:AwardTmgHowMnpiCnsdrdTextBlock contextRef="c0" id="ixv-9194">It is the policy of our Board of Directors and our Compensation Committee to not take material non-public information into account when determining the timing of equity awards in order to take advantage of a depressed stock price or an anticipated increase in stock price.</ecd:AwardTmgHowMnpiCnsdrdTextBlock>
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