The Chart Track UK sales numbers are in and it's no surprise that Grand Theft Auto 4 (Xbox 360, PlayStation 3) checks in on top of the list. After all, the game did sell a whopping 926,000 copies in its first week alone.

Former number one Wii Fit has slipped to number two on the charts while Mario and Sonic at the Olympic Games (Wii, DS)is still holding strong at third place. Wii Play rises to the number four slot while Mario Kart Wii  dips to number 5.

Here's a list of the top twenty best selling games in the U.K. for the week ending on May 3, 2008:

1. Grand Theft Auto 4
2. Wii Fit
3. Mario and Sonic at the Olympic Games
4. Wii Play
5. Mario Kart Wii
6. Gran Turismo 5: Prologue
7. Pro Evolution Soccer 2008
8. Call of Duty 4: Modern Warfare
9. Dr. Kawashima's Brain Training
10. Tom Clancy's Rainbow Six Vegas 2
11. Iron Man: The Official Videogame
12. Game Party
13. Guitar Hero III: Legends of Rock
14. Rayman Raving Rabbids 2
15. FIFA 08
16. Cooking Mama 2
17. Sonic and the Secret Rings
18. Imagine Babies
19. UEFA Euro 2008 Austria-Switzerland
20. More Brain Training from Dr.Kawashima