Green Tea with Lemon Flavour. Doing Good. With your support, Twinings helps provide access to clean water for villages across Darjeeling, helps improve mother and baby health in tea growing regions of Yunnan and helps improve health and nutrition in tea communities in Assam. To learn more about these projects while you finish your cup, heat to twinings.co.uk.. Ethical Tea Partnership. Twinings is founding member of the Ethical Tea Partnership.