This question was answered on 17th March 2021
Between 1 January 2015 and 31 December 2020, 118 individuals and entities were designated in the UK under UN, EU and UK counter-terrorism financial sanctions regimes. Of these 118 individuals and entities, 110 were designated under the United Nation’s ISIL (Da’esh) and Al-Qaida Sanctions List and the EU Autonomous ISIL (Da’esh) and Al Qaida regime. We have not delineated between Al-Qaida and Islamic State affiliation for those designated during this period. Under the Terrorist Asset-Freezing etc. Act 2010 (“TAFA 2010”), the Treasury was required to report to Parliament, quarterly, on its operation of the UK’s counter-terrorism asset freezing regime mandated by UN Security Council Resolution 1373. Previous reports can be found on the 2015 to 2020 quarterly report to Parliament
page. We are not aware of any legal challenges that have been brought in the UK to designations made under these two regimes between 1 January 2015 and 31 December 2020.