UK Singing for Lung Health groups: the blue points on the map represent groups run by a BLF trained leader. UK Singing for Lung Health groups: the blue points on the map represent groups run by a BLF trained leader. Red points on the map are groups run by non-BLF-affiliated groups. Eleven of these groups are affiliated with Breathe Easy groups. Courtesy of the British Lung Foundation (map data ©2017 GeoBasis-DE/BKG (©2009), Google). Adam Lewis et al. BMJ Open Resp Res 2017;4:e000216 ©2017 by British Thoracic Society