Two former investors are developing a social stock exchange in the U.K., where social and environmental businesses can list to raise capital.

"Campanale was previously a fund manager at Henderson Global Investors while Jethi developed new products at the London Stock Exchange. They want to create a market for any enterprise globally whose core business addresses a social or environmental need, such as healthcare or social housing, and needs to raise risk capital...

"...Should it launch, the Social Stock Exchange would offer a focal point - as well as a marketplace - for a diverse community of philanthropists, activists, entrepreneurs and investors that has been growing quietly for 20 years or more. Thanks to the financial crisis and its aftermath, this movement has a golden opportunity to make a lot more noise."