The Mercury Music Prize is a “prestigious” prize awarded to an album made by a British or Irish act in the previous year.
Current top 5:

Florence And The Machine 5.00
Lily Allen 6.00
Bat For Lashes 8.00
Doves 8.00
Little Boots 8.00

I’m a little surprised by Lily Allen and Doves being so high up. Their stars had seemed to be declining. Florence and Doves apparently benefited from well-received performances at Glastonbury (despite the prize being awarded “solely on the basis of the music on the album”). You can see the full list at the: Ladbrokes betting line on the Mercury Music Prize