Mr. James Cogan:

It was under the same scheme - the biofuels obligation scheme, which obliges fuel suppliers to put a certain volume of biofuels into their supply. At present, that level is not high enough to incentivise them to do it. They can just about get away with the current mix, which largely comprises used cooking oil that they are able to count twice. For every litre they put in, they are allowed to declare 2 litres. It is popular among them to do it because they are able to satisfy the obligation with half the effort.