Ubisoft's Just Dance has taken the top spot in the UK all-formats chart for a second week running, keeping former number one heavyweight Call of Duty: Modern Warfare 2 at number two.

Elsewhere in the top ten, there was little change from last week, with Wii Fit Plus dropping just one place to number three and Army of Two: The 40th Day and Wii Sports Resort hanging onto their former week positions of four and five respectively.

FIFA 10 climbed two places to six and James Cameron's Avatar: The Game climbed one place to eight.

Assassin's Creed II stepped up one place to nine and Mario Kart Wii re-entered the top ten at number ten, from 12. Meanwhile, SEGA's acclaimed Bayonetta slipped from 7 to 14.

The only new entry to the top 40 was from Capcom's Dark Void, which made its debut at number 33.

LEGO Batman: The Videogame climbed three places to number 16 in the chart. Warner Bros announced earlier today the title has now sold over a million units in the UK since its release at the end of 2008.

The full top 20 for the week ending January 23 is as follows:

01 Just Dance
02 Call of Duty: Modern Warfare 2
03 Wii Fit Plus
04 Army of Two: The 40th Day
05 Wii Sports Resort
06 FIFA 10
07 New Super Mario Bros Wii
08 James Cameron's Avatar: The Game
09 Assassin's Creed II
10 Mario Kart Wii
11 Darksiders
12 Mario & Sonic at the Olympic Winter Games
13 Forza Motorsport 3
14 Bayonetta
15 Football Manager 2010
16 LEGO Batman: The Videogame
17 Borderlands
18 Wii Play
19 Pro Evolution Soccer 2010
20 Grand Theft Auto IV