Well VGC has exactly that, last 15 weeks PS3 outselling the 360.
http://vgchartz.com/hwcomps.php?cons1=Wii®1=UK&cons2=PS3®2=UK&cons3=X360®3=UK&start=39362&end=39551
Although the Wii has not been double them combined, so perhaps Wii is undertracked or 360/PS3 are overtracked?
VGChartz Hardware data for the period 05th Jan 2008 to 12th Apr 2008:
| Console | Wii | PS3 | X360 |
UK | 578,433 | 376,333 | 297,163 |








