v3.25.2
Cover Page
6 Months Ended
Jun. 30, 2025
Cover [Abstract]  
Document Type 6-K
Amendment Flag false
Document Period End Date Jun. 30, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Entity Registrant Name NUCANA PLC
Entity Central Index Key 0001709626
Current Fiscal Year End Date --12-31