A lot has been written over the years about both public and private sector innovation. Following the wave of managerialist reform in the 1980s and 90s it has been widely believed that the Public Sector could improve its innovation performance by looking to the Private sector. That is not the conclusion we drew from a recent comparative study of Private Sector CEOs and Public sector heads of agencies experience of innovation. Innovation was commonly pursued for different reasons irrespective of whether in the public or private sector. The approach adopted differed primarily based on the degree of uncertainty presented by the environment and whether the innovation was in response to an unexpected situation or part of a deliberate repositioning.