Pharrell Williams has climbed to the top of the singles chart with 'Happy'.
The star secured his third UK number one single of 2013 with the Despicable Me 2 track, which has sold 107,000 copies over the last seven days.
The 40-year-old won his first chart-topper of the year with Daft Punk on 'Get Lucky', before he and Robin Thicke spent five weeks at number one with 'Blurred Lines'.
X Factor winner Sam Bailey slips to number two on this week's countdown with her debut single 'Skyscraper', while Avicii's 'Hey Brother' climbs two places to three.
Jason Derulo enters the top five this week at number four with 'Trumpets', and Eminem and Rihanna's collaboration 'The Monster' climbs from nine to five.
Lily Allen's cover of Keane's 'Somewhere Only We Know' and Ellie Goulding's 'How Long Will I Love You' are non-movers at six and seven.
Katy Perry's 'Roar' is up seven spots to number eight on the final countdown of 2013.
One Direction's 'Story of My Life' and OneRepublic's 'Counting Stars' complete the top ten at nine and ten respectively.
Miley Cyrus climbs twenty places to number 22 with her number one hit 'Wrecking Ball', and Beyoncé and Jay Z's 'Drunk in Love' - taken from the former's self-titled album - is a new entry at number 29.
Meanwhile, Robin Thicke's 'Blurred Lines' and Jessie J's 'It's My Party' re-enter the chart at number 39 and 40 respectively.
Source: Official Charts Company
Robbie Williams holds on to number one album
