The 33-year-old banjoist and lead guitarist found himself at the center of controversy after tweeting about American journalist Andy Ngo’s book, unmasked: in Antifa’s radical plan to destroy democracy.
Marshall told his 10,000 subscribers in March how he read the “important” book, praising Ngo as a “brave man” in a now deleted tweet.
Critics of the book, which claims to denounce a “violent extremist movement,” say it inflates the size and threat of the left-wing antifa movement, which was a frequent target of Donald Trump.
Announcing that he would be stepping down on Thursday, the musician posted online how ‘exhilarating’ being at Mumford & Sons had been, describing how he had been a ‘lucky boy’.
And he said it was a “blessing” to work alongside his colleagues Marcus Mumford, Ben Lovett and Ted Dwane.
“Each concert was its own adventure. Each concert has its own story. Whether it’s odyssey across the Scottish Isles or soapbox shows in Soho, ”he said.
He added: “Who in their right mind would voluntarily walk away from it?”
“It turns out I would. And as you can imagine, it wasn’t an easy decision. “
Marshall said he thought his tweet to Ngo was “harmless” – but within 24 hours he tended to “tens of thousands of angry retweets and comments”.
“I have had a lot of abuse over the years. I am a banjo player after all. But that was another level. “
And he recounted how his group mates and friends were also targeted by “viral mob” shootings – adding that he “very much regrets” the “distress” they endured.
Explaining his tweet about Ngo’s book, Marshall insisted, “The book documents recent far-left activities in the United States.
“The tweet was misinterpreted by many as an equally obnoxious far-right endorsement. Nothing could be further from the truth.
“I unequivocally condemn all political extremism, whether on the right or on the left. “
“I have spent a lot of time since then thinking, reading and listening. I now know that as long as I am a member of the group expressing what I think of the evils of political extremism might cause them problems. My loyalty and my love for them cannot allow this.
“However, staying in the group and censoring yourself will eat away at my conscience, erode my integrity. By leaving, I hope to speak freely without them suffering the consequences. “
Marshall, whose father is British investor Sir Paul Marshall, explained that he looked forward to “new creative endeavors” and spoke and wrote “on a variety of issues”.
He will also remain involved with the Hong Kong Link Up, a non-profit organization he co-founded that connects UK residents with people from Hong Kong arriving in the UK.
Marshall also thanked the group, which formed in London in 2007, describing their adventure together as “the ride of a lifetime”.