5.  In article 4 (rates of duty for fuel substitutes)—

(a) in paragraph (2)(a) (diesel substitutes), for “ultra low sulphur diesel” substitute “sulphur-free diesel”,

(b) in paragraph (2)(c) (unleaded petrol substitutes), for “ultra low sulphur petrol” substitute “sulphur-free petrol”, and

(c) in paragraph (4) (aviation gasoline substitutes), delete the words “one half of”.