Whether statutory instrument used to deprive claimant of citizenship was ultra vires. Chamberlain J [2021] EWHC 2179 (Admin), [2021] WLR(D) 433 Bailii, WLRD British Nationality Act 1981 40(2)(5) 41(1), British Nationality (General) Regulations 2003 10(4), British Nationality (General) (Amendment) Regulations 2018 3 England and Wales Immigration, Administrative Updated: 12 January 2022; Ref: scu.666441