Topping the chart two weeks ago, the folk band's second studio album beat Ellie Goulding's second LP Halcyon to the summit.
Muse drop two places to three with The 2nd Law. Pink falls one to four with The Truth About Love, while Emeli Sandé is a non-mover at five.
Jeff Lynne dominates the lower end of the Top 10, with his second solo album Long Wave entering at seven.
Electric Light Orchestra's collection of new recordings Mr. Blue Sky - The Very Best Of is new at eight, while All Over The World - The Very Best Of is a non-mover at ten.
All Time Low land at nine with their latest LP Don't Panic. Australian band Tame Impala enter at 14 with Lonerism.
Kiss's album Monster is new at 21, while Mika's third studio LP The Origin of Love is a new entry at 24.
Barbra Streisand's new collection of rare material Release Me enters at 31. Lemar misses out on a Top 40 placing with his fifth album Invincible.
Watch the video for 'I Will Wait' by Mumford & Sons:
Source: Official Charts Company
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