Based on biggest album, biggest headline gig, weeks on album and singles chart Q have compiled this list. The top 20 are as follows:
1.Pink Floyd
2.Led Zeppelin
3.The Rolling Stones
4.U2
5.Queen
6.Dire Straits
7.Bruce Springsteen & The E street Band
8.The Beatles
9.Bob Marley & The Wailers
10.Fleetwood Mac
11.The Eagles
12.The Beach Boys
13.Oasis
14.BON JOVI
15.Guns n' Roses
16.Nirvana
17.Genesis
18.The Bee Gees
19.Metallica
20.Boston

They've got Slippery as the biggest album with 12.9m sold, Hyde Park 2003 as the biggest gig, 80,000 (festivals not included) and they've been on the U.K album chart for 427 weeks.