Regulation 9 Amendments to the principal Regulations Original text. Later amendments are not shown. In regulation 17A(2)(a)f1 for the word “basic” there shall be substituted the word “lower”. Annotations Footnotes f1 Inserted by S.I. 1991/733 and amended by S.I. 1991/2729. ← Regulation 8 Regulation 9 Regulation 10 →