When blood stocks run low, the NHS faces an emergency of its own. In these moments, it needs a fast, unmistakable response that cuts through the noise and mobilises the public to donate blood. So we got some of the nation’s biggest brands (and one huge band) to donate their logos and media to ask the public to donate their blood. The campaign went live at over 100 sites across Britain, won Campaign Ad of the Day, and in the latest round partnered with Metallica at their most recent stadium tour.