Duffy continues singles chart reign

Duffy has made it a third week atop the UK singles chart with 'Mercy'.

The Welsh popstar oversees a top ten almost entirely unchanged from last week, with single place rises for Rihanna and OneRepublic.

Outside the top ten, Taio Cruz rises 12 places to 11 with 'Come On Girl', while Flo Rida jumps from 22 to 12 with long-time US number one 'Low'.

Other climbers this week include Chris Brown, who jumps to 19 with 'With You'; and Danish pop outfit Alphabeat, at 23 with 'Fascination'.

The top ten UK singles in full:

1. (1) Duffy: 'Mercy'
2. (2) H 'two' O ft. Platnum: 'What's It Gonna Be'
3. (3) Nickelback: 'Rockstar'
4. (4) Basshunter: 'Now You're Gone'
5. (5) Kylie Minogue: 'Wow'
6. (6) Adele: 'Chasing Pavements'
7. (8) Rihanna: 'Don't Stop The Music'
8. (9) OneRepublic: 'Stop and Stare'
9. (7) David Jordan: 'Sun Goes Down'
10. (10) Kelly Rowland: 'Work'

> Who scores a surprise number one in the albums chart? Click here to find out!