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movers and shakers

British  

plural noun

  1. informal the people with power and influence in a particular field of activity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of movers and shakers

C20: perhaps from the line ``We are the movers and shakers of the world for ever'' in `Ode' by Arthur O'Shaughnessy (1844–81), British poet