Martin Darvill and QEDG Management manager the world's premiere rock stars, including John Wetton (Asia, King Crimson, Roxy Music), Geoff Downes (Asia, Yes, Buggles, the Original members of Asia (Geoff Downes, Steve Howe, Carl Palmer, John Wetton),  Focus featuring Thijs Van Leer, Martin Turner's Wishbone Ash, Uriah Heep, Roger Waters' lead guitarist Dave Kilminster , and Closer to Earth, featuring Kilminster and vocalist Murray Hockridge.  

With Stewart Young, Mr Darvill manages Emerson Lake and Palmer (ELP).  

QEDG manage other fine acts, including Curved Air and Wetton-Downes' Icon, featuring the vocals of 2011 Classic Rock female vocalist of the year Anne-Marie Helder.