Over the past 15 years Prologis UK, in partnership with Planet Mark, has put sustainability firmly at the forefront of their developments; embedding it into the design process, operations, community impact and supply chain. The output of this process is easily quantifiable; cumulative whole-life carbon reduced, embodied carbon mitigated, and acreage of rainforest protected have all been tracked. It is less easy to track some of the less tangible, yet far-reaching impacts associated with a programme of this scale. This report reviews some of the highlights and successes that define this journey.