It's an exclusive business club with over 8,000 companies, which put environmental and social values at the heart of their work.

But the B Corp badge has come under some criticism for taking on some multinational companies - some smaller businesses say that has diluted its values.

We hear from Anjli Raval, who reports on what goes on inside the world's biggest companies for the Financial Times.One of the biggest growth areas for B Corps is expected to be Africa. Tahira Nizari is the co-founder of new B Corp Kazi Yetu, selling traceable products like tea and spices from Tanzania.

Max Landry at Peppy - a health tech company - who specialise in underserved areas of healthcare lets us know the hoops to join the B Corp club.

Jonathan Trimble, the CEO and founder of creative agency And Rising, which helps new brands with their marketing plans tells us what he wants B Corp to change. Chris Turner, Executive Director at B - Lab UK, tells us how their standards will shift in the next year.Produced and presented by Rick Kelsey(Image credit: Kazi Yetu)