The Top 20 mandarins in this year’s HSJ100.

Sir David Nicholson, NHS chief executive

Jeremy Heywood, cabinet secretary

Richard Douglas, finance director, DH

David Behan, director, social care, local government and care partnerships, DH

David Flory, NHS deputy chief executive 

Bill McCarthy, managing director responsible for establishing the NHS Commissioning Board

Una O’Brien, permanent secretary, DH

Sir Bruce Keogh, NHS medical director

Dame Sally Davies, chief medical officer, DH

Dame Barbara Hakin, national managing director of commissioning development, DH

Ian Dalton, chief executive, NHS North and managing director of provider development, DH

Dame Ruth Carnall, chief executive, NHS London

Sir Ian Carruthers Chief executive, NHS South

Sir Neil McKay Chief executive, NHS East and Midlands

Jim Easton National director for improvement and efficiency, DH

Malcolm Grant, chair, NHS Commissioning Board

David Nicholson’s advisers: Jo Wass, Ralph Coulbeck and Jo Lenaghan

Sir Mike Richards, national clinical director for cancer

Ian Dodge, policy support unit director, DH

Matthew Kershaw, director of provider delivery, DH