These Regulations provide for a relief from biodiesel duty in respect of biodiesel produced from waste cooking oil. Relief is allowed upon application by a qualified claimant, who is defined in Regulation 2 as a person who produces biodiesel from waste cooking oil, who is an approved person, or who is liable to pay biofuels duty in accordance with regulation 18 of the Biofuels and Other Fuel Substitutes (Payment of Excise Duties etc) Regulations 2004. Regulation 3 construes a reference to duty on hydrocarbon oil as including a duty on biodiesel. Regulation 4 sets out the scope of the relief.