2003: 50 Cent. A good start. "Fiddy" released his debut album the same year, which has gone on to sell 1.5 million copies. Since then, he's had 3 more more successful albums. He's also grown fairly notorious for his feuds, including telling Rick Ross "Imma fuck your life up for fun."
2004: Keane. Keane, however, have yet to threaten to fuck anyone's life up for fun. Fairly surprisingly, all four of their albums have reached No.1 in the UK, though their most recent album Strangelands achieved by far the poorest sales. They achieved their first No.1 single in 2013 with 'Somewhere Only We Know'... It just took Lily Allen singing it to get there.
2005: The Bravery. Don't be silly, of course you've heard of them. To be honest, The Bravery haven't exactly hit the big time since their win, with their three albums failing to grab much attention. They announced their split three years after it happened, which isn't exactly a great sign that anyone was asking. Their drummer is now drumming for Morrissey though. Best of luck to him with that.
2006: Corinne Bailey Rae. Her debut album achieved worldwide sales of over 4 million. Rae's second album in 2012, though less commercially successful, achieved critical acclaim - and was inspired in part by the death of her husband in 2008.
2007: Mika. Describing him as a one hit wonder is a bit harsh, but after single 'Grace Kelly' blew up around the world, Mika did struggle somewhat to repeat the song's success. Don't worry though, he's huge in Italy. He's not only releasing a compilation album over there (despite only have three to pick from), but he's also a judge on the Italian X Factor.
2008: Adele. Whatever happened to that Adele person since 2008? Said no-one ever. Unless you've been taking part in a five year long wilderness programme, you'll be aware of Adele's phenomenal success. Here's a summary: 28 million album sales, No.1s everywhere, baby, James Bond theme, Oscar...
2009: Little Boots. Her debut album was fairly successful, but Little Boots' second offering in 2013 failed to make much of an impact. In fact, 2009's more note-worthy for those who were nominated but DIDN'T win - Florence and the Machine, Lady Gaga, White Lies...
2010: Ellie Goulding. She actually started off supporting Little Boots on her tours, before overtaking her quite dramatically in terms of success. Her two albums have both reached No.1 in the UK and selling out London's O2 Arena, and she hasn't done too badly in America either, reaching No.9 with her most recent album Halcyon.
2011: Jessie J. Jessie's become something of a household name since rising to fame. She's had two successful albums, a few number ones, shaved her head for charity and judged, sorry "coached", on The Voice.
2012: Michael Kiwanuka. He was never going to achieve the level of celebrity that his predecessor Jessie J got - he's got a quiet, understated sound that doesn't exactly scream No.1 single. He might have hoped for a bit more success though, as his debut album failed to make a huge impact despite being nominated for a Mercury Prize. He hasn't released any new music since.
2013: Haim. When they're not bowing down to David Cameron on UK TV appearances, Haim have been pretty popular since their win. Their debut album went to No.1 in the UK, they performed to a packed crowd at Glastonbury, and even performed on Saturday Night Live. The band said they planned to release their "inner Kanye" in 2014, so we looked forwards to them comparing themselves to Obama, The Beatles and probably God. What actually happened was they began working on their second album, and contributed a song for the Hunger Games soundtrack.
2014: Sam Smith. It's hard to believe, at this point, that Sam Smith has only been dominating the UK charts for a year. His debut album, In The Lonely Hour, debuted at No.1 in the UK, outselling Coldplay's Ghost Stories that week by 20,000 copies. If he's a star in the UK though, he's a veritable superstar in the US. Over there, In The Lonely Hour has shifted around 1.2 million copies.