According to these stations' last.fm stats:

Radio 1

1 Yolanda Be Cool & DCUP – We No Speak Americano
2 Tinie Tempah – Pass Out
3 Gramophonedzie – Why Don't You
4 Mumford & Sons – The Cave
5 Owl City – Fireflies
6 The xx – Islands
7 Ellie Goulding – Starry Eyed
8 Marina & the Diamonds – Hollywood
9 Pendulum – Watercolour
10 Brandon Flowers – Crossfire

Radio 2

1 Amy Macdonald – This Pretty Face
2 Scissor Sisters – Fire With Fire
3 Brandon Flowers – Crossfire
4 Scouting for Girls – This Ain't A Love Song
5 Michael Bublé – Hollywood
6 Scouting for Girls – Famous
7 Alicia Keys – Empire State Of Mind (Part II) Broken Down
8 Train – Hey, Soul Sister
9 Katie Melua – The Flood
10 Eliza Doolittle – Pack Up

6 Music

1 Foals – Spanish Sahara
2 Hot Chip – One Life Stand
3 Vampire Weekend – White Sky
4 Gruff Rhys – Shark Ridden Waters
5 Yeasayer – O.N.E.
6= Vampire Weekend – Holiday
6= Arcade Fire – We Used to Wait
8 Crystal Castles – Not In Love
9= Groove Armada – Paper Romance
9= The Chemical Brothers – Swoon

1Xtra

1 Dennis Ferrer – Hey Hey
2 Nas & Damian Marley – As We Enter
3= Major Lazer – Pon De Floor
3= Gyptian / Nicki Minaj – Hold Yuh (Remix)
5 Tinie Tempah – Pass Out
6 Vybz Kartel / Popcaan / Gaza Slim – Clarks
7 Usher / Will.I.Am – OMG
8 Young Money – BedRock
9 Rihanna – Rude Boy
10 Smiler – Enza

Absolute

1 Mumford & Sons – Roll Away Your Stone
2 Brandon Flowers – Crossfire
3 Florence + the Machine – Dog Days Are Over
4= Muse – Uprising
4= Train – Hey, Soul Sister
6 Paolo Nutini – Candy
7 Owl City – Fireflies
8 Paolo Nutini – 10/10
9 Snow Patrol – Just Say Yes
10 Manic Street Preachers – (It's Not War) Just The End Of Love

NME Radio

1 The xx – VCR
2 Vampire Weekend – Giving Up the Gun
3 White Rabbits – Percussion Gun
4 Arcade Fire – The Suburbs
5 Yeasayer – Madder Red
6 Crocodiles – Sleep Forever
7 Blur – Fool's Day
8 The Ropes – Love Is a Chain Store
9 Hot Chip – One Life Stand
10 Egyptian Hip Hop – Moon Crooner