As the Social Value Act percolates through Local Authority and other commissioning organisations, the ability to demonstrate social impact has become a key success factor. Moreover, as the environment in which ACH operates is becoming increasingly competitive, the ability to demonstrate a robustly evidenced social impact is a key differentiator. In this context ACH have adopted a Social return on investment (SROI) approach to ensure that we rigorously and professionally measure our social impact in order to guide our decision making processes, benchmark ourselves against similar organisations and communicate to partners and commissioners the value of our activities.