NewStatesman recently published a profile of Chris Hohn, founder of the Children's Investment Fund. The profile focuses primarily on Hohn's noteworthy charitable endeavours.
From the profile:
Hohn has donated over £800 million to children's charities since 2003. His Children's Investment Fund Foundation receives direct grants from his hedge fund of the same name…
The notoriously discrete fund manager is worth about £80 million. This makes him one of the most generous British philanthropists when donations are weighed against personal wealth. Bill Clinton once said that Hohn's "marriage of business and philanthropy provides a great tool to effect serious change in the developing world".