In 2015, B Corp certification was launched in the UK. Since then, over 1,200 companies have adopted certified B Corps status. Most certified B Corps in the UK are small and medium-sized, with SMEs accounting for 99.9% of businesses in the UK. The B Corp movement seeks to change the economic system from a shareholder capitalism to a stakeholder economy. Certified B Corps adopt a stakeholder-driven mode towards ‘high standards of social and environmental performance, accountability and transparency.’ The article explores the growth of the B Corp movement, issues around its standards, certification process, including the legal requirement, transparency, and governance. It examines the effectiveness of this standard-based approach for stakeholder governance. It argues that the certified B Corp creates an avenue for stakeholder governance. However, to fully realise the shift towards stakeholder governance, there is a need for greater work towards achieving accountability for all key stakeholders identified as shareholders, workers, community, environment, and customers.