Coldplay have scooped two prizes at the Q Awards ceremony in London, including best album for Viva La Vida or Death To All His Friends.

The band, fronted by Chris Martin, also won best act in the world today.

Welsh star Duffy won best breakthrough, while Keane picked up best track for comeback song Spiralling.

The music magazine also honoured veteran artists including Grace Jones, who was named Q Idol, and Glen Campbell, winner of the legend award.