By Nicholas Earl There were “a lot of errors” in the BBC Panorama’s expose of Drax’s logging practices, argued Dr Alan Knight, director of sustainability for the power group. He told the Environmental Audit Committee the BBC’s claim 11 per cent of its supplies are roundwood – timber which is left as small logs – did not acknowledge this was of lower quality wood. Knight also criticised the BBC’s definition of “primary forests” – denying that the firm was cutting down old, carbon rich trees to power its biomass facilities. He said: “There was a lot of errors and misinterpretations, and we proba…