The Grammy-nominated album sold 1,586,000 copies last year – 36,000 more than its nearest rival, Leona Lewis' Spirit LP.
Back To Black also sold a further 286,000 copies in its two-disc Deluxe format.
Six of the year's top ten albums were by British acts, including Take That's Beautiful World disc, which sold 1,080,000 copies to take its total sales to 2,204,000.
The top ten albums of 2007 in full:
1. Amy Winehouse: Back To Black
2. Leona Lewis: Spirit
3. Mika: Life In Cartoon Motion
4. Take That: Beautiful World
5. Westlife: Back Home
6. Eagles: Long Road Out of Eden
7. Kaiser Chiefs: Yours Truly, Angry Mob
8. Arctic Monkeys: Favourite Worst Nightmare
9. Timbaland: Shock Value
10. Rihanna: Good Girl Gone Bad