The Smeezingtons, who comprise Peter Hernandez aka Bruno Mars, Philip Lawrence and Ari Levine, take their place at the top of the chart having co-penned Forget You and fellow UK chart toppers Nothin' On You by B.o.B. featuring Mars and Mars' own recording Just The Way You Are (Amazing).

Norway's New York-based songwriting and production duo Stargate take second place on the list after a year in which they had a series of big hits with Rihanna and co-wrote Katy ...