The largest B Corp in the world is Danone North America and in the UK one of the largest B Corps is Danoneâs fresh dairy products. They may certify as a B Corp by earning points on the B Impact Assessment either / both by directly addressing a social or environmental need as their core revenue stream; (i.e. Follow the community of Certified B Corporations. Some companies are both Certified B Corporations and benefit corporations, and the benefit corporation structure fulfills the legal accountability requirement of B Corp Certification. Disclaimer: Harvard Business Services, Inc. is a document filing service that provides general information. First of all, letâs define B Corps. Certified B Corporations – or B Corps – are companies that seek to redefine business to make a positive contribution to the world.