Biofuel use led to greenhouse gas savings of 42 per cent in the first month of reporting, according to the Renewable Fuels Agency.The figure excludes emissions pointed out on the Gallagher Review which result from indirect changes in land use and the RFA included in its first monthly report the recommendation that these emissions also be considered in future.The report, compiled by the RFA from figures provided by producers who supply the UK fuel industry with 450,000 litres of fuel, also revealed that targets had not been met.An annual target of biofuel accounting for 2.5 per cent of all UK road fuels was missed, instead 2.14 per cent of fuels met the requirements.The review also showed a lack of transparency, with the origin of only 57 per cent of the fuels' feedstock known.Asad Rehman, Friends of the Earth's biofuels campaigner, said: "The shocking admission that we are unable to identify the origin of nearly half the biofuels used in the UK means that the government cannot assure the British people that the biofuels in their petrol tanks have not destroyed rainforests."