XML 84 R47.htm IDEA: XBRL DOCUMENT v3.8.0.1

Staff Costs - Additional Information (Details) - Director	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Classes Of Employee Benefits Expense [Abstract]
Number of directors, exercised share options	0	1	0

X

- References

No definition available.

+ Details

Name:	ifrs-full_ClassesOfEmployeeBenefitsExpenseAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of directors, exercised share options.

+ References

No definition available.

+ Details

Name:	ncna_NumberOfDirectorsExercisedShareOptions
Namespace Prefix:	ncna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration