30. Graham Benson

Key points

CIO, Rentalcars.com

A self-described "maverick", Benson has worked in eCommerce since before it existed as a term, holding CIO and IT Director positions at five internet pureplays.

One of the largest changes Benson made at Rentalcars.com was a reorganisation into small, agile product teams, with a tighter integration between IT and business. He described it as "a major cultural shift."