Mogwai
Super Furry Animals
The Wildhearts
Godspeed + all Silver Mount Zion
Flaming Lips
Mercury Rev
Bis
Carter USM
Yeah Yeah Yeahs
Twilight Sad
Delgados
Arab Strap
Going on ones that have released at least three albums:
New Order (conventional UK issue albums, not international variations of which there are hundreds)
Lostprophets
Linkin Park
Far too many bands/artists on 2 albums only
The Killers
Green Day
Feeder
Nils Lofgren
Little Feat
Steely Dan
The Police
Lynyrd Skynrd
ZZ Top
Lost Phrophets
Thin Lizzy
Hole
The Donnas
Nickleback
Avril Lavinge
Semisonic
The Subways
The Hives
Paramore
The Darkness