Complex sentence: Monkfish tail is sometimes illegally used and sold as scampi in the United Kingdom, contravening the Fish Labelling (Amendment) England Regulation 2005 and Schedule 1 of the Food Labelling Regulations 1996.
Split into simpler sentences: Monkfish tail is sometimes illegally used and sold as scampi. In the UK this contravenes the Fish Labelling (Amendment) England Regulation 2005 and Schedule 1 of the Food Labelling Regulations 1996.