"The Greatest Voice in Rock Top 40" was compiled by the station's DJs, presenters and listeners, plus musicians, rock critics and experts such as Tony Iommi from Black Sabbath, Phil Manzanera from Roxy Music and Ian Anderson from Yes.

The Top 40 Greatest Voices in Rock

1. Robert Plant (Led Zeppelin)
2. Freddie Mercury (Queen)
3. Paul Rodgers (Free/ Bad Company)
4. Ian Gillan (Deep Purple)
5. Roger Daltrey (The Who)
6. David Coverdale (Whitesnake)
7. Axl Rose (Guns ‘N’ Roses)
8. Bruce Dickinson (Iron Maiden)
9. Mick Jagger (The Rolling Stones)
10. Bon Scott (AC/DC)
11. David Bowie
12. Jon Bon Jovi (Bon Jovi)
13. Steven Tyler (Aerosmith)
14. Jon Anderson (Yes)
15. Bruce Springsteen
16. Joe Cocker
17. Ozzy Osbourne
18. Bono (U2)
19. Peter Gabriel
20. James Hetfield (Metallica)
21. Janis Joplin
22. Chris Cornell (Audioslave / Soundgarden)
23. Roger Chapman (Family)
24. Phil Lynott (Thin Lizzy)
25. Glenn Hughes (Deep Purple)
26. Steve Perry (Journey)
27. Jim Morrison (The Doors)
28. Alex Harvey (The Sensational Alex Harvey Band)
29. Rob Halford (Judas Priest)
30. Ronnie James Dio (Dio)
31. Sammy Hagar (Van Halen)
32. Meat Loaf
33. Alice Cooper
34. Geddy Lee (Rush)
35. Brian Johnson (AC/DC)
36. David Gilmour (Pink Floyd)
37. Fish (Marillion)
38. Dave Lee Roth (Van Halen)
39. Biff Byford (Saxon)
40. Neil Young