The British government announced at the end of 2002 that local bus operators in the UK will be eligible for a 100% rebate on biodiesel, which is made from recycled waste vegetable oils or virgin rapeseed oils.
Biodiesel can be used as a blend (normally at 5%) in all regular diesel engines. Higher blends and even pure biodiesel can also be used, but this usually requires engine modification.
Biodiesel offers significant CO2 savings and is also sulphur free.
100% duty rebates are also available to operators using road fuel gases, LPG and CNG in their buses.