U.K. entertainment retailer HMV has issued figures showing the sales increase for the nominees of this year's Barclaycard Mercury Prize. The XX have received the biggest sales boost in percentage terms following their victory, with the exception of jazz outfit the Kit Downes Trio who began from a low base.

The XX won the album of the year award for its debut "XX" (Young Turks/XL Recordings) at the ceremony in London on Tuesday (Sept. 7). Their triumph was shown live on BBC2 as part of a 30-minute show, and that was followed later in the event by a 60-minute show featuring all the performances.

HMV tracked the demand for the 12 albums on the day after the awards (Sept. 8) compared to one-day sales a week earlier on Sept. 1. The results cover physical and digital sales.

Overall, the sales uplift for all 12 albums was 105% for Sept. 8 compared to Sept. 1. That compares with an increase of just 15% across all nominees last year, when Speech Debelle won.

The "XX" album increased sales by 448% - a particularly strong result considering that it has been in the top 20 anyway. Mumford & Sons' "Sigh No More" has also been selling well before the ceremony and only had a 6% boost yesterday. But the Mumford & Sons album is still the second biggest seller of the nominees this week, only behind the XX according to HMV.

Irish folk act Villagers enjoyed an HMV sales increase of 333% for "Becoming A Jackal" and Foals' sophomore set "Total Life Forever" was up 225% off the back of their strong performance. They are set to move up the Official Charts Co listing to just outside the top 50.

"Few commentators would dispute that the Mercurys have been a great success this year or would challenge the judges' choice of the XX, and going by this very healthy increase in overall album sales, it looks like the music-buying public agree," said HMV Music Manager John Hirst in a statement. "It's also interesting that along with the XX, it's been the likes of Villagers, Laura Marling and Foals that have enjoyed the biggest lift in demand - all acts that by general consent gave brilliant performances on the night."

HMV has produced its own chart (below) ranked in terms of the acts that gained most from their participation at the ceremony. This has been weighted to take into account the lift in sales on the previous week, actual sales and the resulting likely moves in chart position.

1 The XX "XX" (Young Turks/XL Recordings) - up 448%
2 Villagers "Becoming A Jackal" (Domino) - up 333%
3 Laura Marling "I Speak Because I Can" (Virgin) - up 227%
4 Foals "Total Life Forever" (Transgressive/Warner Bros) - up 225%
5 I Am Kloot "Sky At Night" (Shepherd Moon/EMI) - up 101%
6 Wild Beasts "Two Dancers" (Domino) - up 217%
7 Mumford & Sons "Sigh No More" (Island/Universal) - up 6%
8 Biffy Clyro "Only Revolutions" (14th Floor/Warner) - up 27%
9 Corinne Bailey Rae "The Sea" (EMI) - up 211%
10 Paul Weller "Wake Up The Nation" (Island/Universal) - up 32%
11 Kit Downes Trio "Golden" (Basho) - up 733%
12 Dizzee Rascal "Tongue n Cheek" (Dirtee Stank) - up 18%