Large infrastructure projects such as the proposed M4 relief road scheme provide an ideal opportunity for those responsible to demonstrate how they are fulfilling their duties in relation to the Act.

In February 2017 the Commissioner submitted written evidence to the Public Inquiry challenging the plans and questioning how it will meet the needs of future generations, and submitted further written evidence in September 2017 warning against the misinterpretation of the Well-being of Future Generations Act that undermines the spirit and the ambition of the Act.