Marcus Mumford feels "a bit more like a grown-up" since marrying Carey Mulligan.

The British rocker, 28, tied the knot with the 29-year-old actress in 2012 and while the couple are clearly smitten, they keep their married life on the lowdown.

Both travel a lot for work but when they are at home in the UK, Marcus enjoys wedded bliss.

"I feel a bit more like a grown-up, but a lot of the time I don't really feel like a grown-up," he grinned to Billboard. "That's marriage to me."

While he and Mumford & Sons bandmate Ben Lovett are loved up, the same can't be said for fellow members Winston Marshall and Ted Dwane.

Winston describes 2014 as a "pretty bad year" full of "a lot of loss", but luckily playing tracks such as The Wolf was a "cathartic" experience for the guitar player. There are also rumours the 26-year-old flirted up a storm with Katy Perry during recent rehearsals in Berlin, Germany.

One thing the band can remain confident about is their popularity; while they made the big time with their banjo-based music, their latest album Wilder Mind sees them ditch the instruments in favour of electric versions.

However, Winston doesn't believe they'll have a bigger impact than other genres.

"There's a lot of rock out there. But it's no longer... I don't think it's what our generation will be remembered for. I think it'll be Kanye West and Rihanna," he noted, while Marcus added it makes him feel sad.

"Why, though' They're so sick," Winston quizzed.

"Rihanna' I think Kanye is sick. He's the only rock star left," Marcus added. "[His show at Koko in London, UK] was f**king amazing. There were a bunch of cool London grime MCs doing stuff. But then he gets up and just blows them all away. Says one word and the whole room just... That's rock'n'roll, to me."

LATEST NEWS