GTAV also becomes the overall 24th biggest selling title of all time in the UK, selling its launch week than all other GTA titles combined, and besting previous launch week record holder Call of Duty: Black Ops by almost a quarter of a million units.

On the individual platforms the game is even bigger, becoming the 11th biggest on Xbox 360 and 10th biggest on PlayStation 3 after just five days on sale. The split of sales between platforms is fairly even, with 57 percent on Xbox 360 and 43 percent on PS3.

Despite accounting for almost 89 percent of sales for the week, GTAV wasn't the only new entry to the chart. Konami's Pro Evolution Soccer 2014 made its debut at two, while Aliens: Colonial Marines re-entered the chart at eight thanks to retail discounting and promotion.

Elsewhere, The Last Of Us jumped up to three from 27, Saints Row IV dropped from one to four, and Harvest Moon 3D: A New Beginning makes its chart debut at 22.

The Top 10 UK chart for the week ending September 21:

1. Grand Theft Auto V
2. Pro Evolution Soccer 2014
3. The Last Of Us
4. Saints Row IV
5. Tom Clancy's Splinter Cell: Blacklist
6. Minecraft: Xbox 360 Edition
7. Diablo III
8. Disney Infinity
9. Aliens: Colonial Marines
10. Kingdom Hearts HD 1.5 Remix