The group's debut Sigh No More clocked up its one-millionth Stateside sale last week as it dropped from two to three on the Billboard 200 albums chart, only days after Official Charts Company data revealed the same album had surpassed seven figures in the UK.

It makes the album the first by a UK band to accumulate 1m sales in the two territories since Parlophone act Coldplay's Viva La Vida Or Death And All His Friends, which SoundScan figures show ...