# The Medicines for Human Use (Clinical Trials) (Amendment) Regulations 2025, Regulation 20: Amendment to regulation 30

Extent: E+W+S+N.I.

(1) Regulation 30 (urgent safety measures) is amended as follows.
(2) In paragraph (1), for “subjects” substitute “participants”.
(3) In paragraph (2)(b), for “3 days” substitute “7 days”.

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Source: https://www.legislation.gov.uk/uksi/2025/538/regulation/20 (the official version)
Page: https://openlegislation.uk/medicines-for-human-use-clinical-trials-amendment-regulations-2025/regulation-20
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.