The Wellbeing of Future Generations Act 2015 came into full force in April 2016. It puts a legal responsibility on the Welsh public sector, including Welsh Government, to consider sustainability in all of its actions. The potential for this to change the private sector, too, is huge, but how much progress has been made? What are the implications of Brexit for the Act and Wales: huge opportunity or damage limitation? Jane Davidson was the original architect of this Act and Sophie Howe is the Commissioner responsible for delivery.