These Regulations amend the Ionising Radiation (Medical Exposure) Regulations 2017 (S.I. 2017/1322) (“the 2017 Regulations”). These Regulations are being issued free of charge to those who purchased the Ionising Radiation (Medical Exposure) (Amendment) Regulations 2018 (S.1 2018/121) (“the 2018 Regulations”). The 2018 Regulations made amendments to the 2017 Regulations which re-numbered regulation 3 but failed to update all cross references to regulation 3. These regulations correct that defect.