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, S.I. 1998/1828 and S.I. 2001/1200. ← Regulation 1 Regulation 2 Regulation 3 →