Using the lever of parity of esteem between mental and physical health to close the mental health gap - a call for action.

This paper provides a six-point definition of what parity of esteem for mental health means in practice. It highlights examples of the current disparity between mental and physical health and the importance of redressing this. The significance of securing a legislative basis for parity in England is discussed. The authors make a call for action, and pose six questions for international readers to consider and respond to.