They've conquered the globe with their signature neo-folk sound and killer hooks.

And while Mumford & Sons have won a legion of fans with their past three albums, frontman Marcus Mumford revealed devotees could be in for a very different sound as they push forward with their career.

Speaking to Mirror Online at the 2017 Hyundia Mercury Prize nominations, in London, the 30-year-old chart-smasher hinted that he had some radical plans for the neo-folk band, explaining that they may head in a different direction.

(Image: WENN)

Letting slip that they were recording their follow up to 2015's Wilder Mind, Marcus said that he had "some ideas" for the future of the band and their musical direction.

Though - something which may assure fans - he added anything that did happen would be a group decision.

"Yeah, I do [have some ideas], but I’ve got to discuss it with the other lads," he said while flashing a wry smile.

But he also had more news, as he revealed in-between their busy tour schedule, Mumford & Sons have been hard at work on album number four.

Keeping fairly tight-lipped on the whole affair, he said: "It’s fun... we’re now in the studio and working on the new album - we’re just taking our time and writing some good songs."

Attending the event as part of the judging panel for this year's Hyundai Mercury Music Prize, Marcus said he was honoured to have been asked to select this year's shortlist.

(Image: WireImage)

(Image: Getty)

"It’s amazing to be asked to do it as a member of the British music scene," he said, though he refused to let slip who his favourite act on the shortlist was.

This year's shortlist is as follows: