Regulation 2 Interpretation Original text. Later amendments are not shown. In these Regulations “the Principal Regulations” means the Fossil Fuel Levy Regulations 1990f1. Annotations Footnotes f1 S.I. 1990/266 as amended by S.I. 1996/1309 and S.I. 1998/1828. ← Regulation 1 Regulation 2 Regulation 3 →