Teledyne e2v, part of the Teledyne Imaging Group, will supply infrared detectors for the UK-led climate change TRUTHS mission. The Traceable Radiometry Underpinning Terrestrial and Helio Studies (TRUTHS) mission aims to establish an SI-traceable space-based climate and calibration observing system to improve confidence in climate-change forecasts, often referred to as a standards laboratory in space.