Chief executive, the King’s Fund (2010 ranking: 61)

Professor Ham is a canny operator who has positioned the King’s Fund as the organisation best placed to make sense of the confused NHS reforms. In demand by the media, he is able to clearly explain the pressures on the NHS without disguising their complexity.

The former DH director of strategy also quickly spotted the momentum building up behind “integrated care”. His vision of NHS care supplied by competing integrated service organisations and/or networks may yet prove to be the sustainable solution that both the government and its critics are looking for.