These Regulations are made in exercise of the powers conferred in section 8 of the European Union (Withdrawal) Act 2018 (c.16) in order to address failures of retained EU law to operate effectively and other deficiencies arising from the withdrawal of the United Kingdom from the European Union. The deficiencies addressed fall within paragraphs (a) and (g) of section 8(2) of the 2018 Act.
Link: The Radio Spectrum (EU Exit) Regulations 2018
Source: Legislation .gov.uk