Fashion is a hugely polluting industry and is under enormous pressure to become more sustainable. From the way cotton is grown, to the use of synthetic materials and the conditions in factories where our clothes are made - these are all challenges facing the sector. In this programme Patrick Grant, the British menswear designer, factory owner and judge on the Great British Sewing Bee, asks how the fashion industry should respond and what we, as consumers, should be doing too. Presenter: Patrick Grant Producer: Caroline Bayley Picture Credit: BBC