Last week the X Factor champion topped the Christmas singles chart with the track, a cover of Leonard Cohen's classic.
Leona Lewis bounces back to two with 'Run', while Beyoncé rebounds to three with 'If I Were A Boy'.
Meanwhile, James Morrison climbs to a new peak of four with 'Broken Strings', his collaboration with Nelly Furtado.
Jeff Buckley's version of 'Hallelujah', which took second place on the Christmas singles chart, falls to seven this week.
The top ten singles in full (click to read our reviews):
1. (1) Alexandra Burke: 'Hallelujah'
2. (3) Leona Lewis: 'Run'
3. (2) Beyoncé: 'If I Were A Boy'
4. (6) James Morrison ft. Nelly Furtado: 'Broken Strings'
5. (7) Kings of Leon: 'Use Somebody'
6. (9) Take That: 'Greatest Day'
7. (2) Jeff Buckley: 'Hallelujah'
8. (5) Geraldine McQueen: 'Once Upon A Christmas Song'
9. (14) Katy Perry: 'Hot 'N' Cold'
10. (11) Killers: 'Human'
Source: Official Chart Company
> Click here for this week's top ten albums