have postponed three US tour dates this week after bassist Ted Dwayne was discovered to have a blood clot on the surface of his brain. In a statement posted on the band's official website, it was confirmed that gigs in Dallas, Woodlands and New Orleans will no longer go ahead on the planned dates while Dwayne recovers from surgery. "Our friend and bandmate Ted has been feeling unwell for a few days, and yesterday he was taken to a hospital to receive emergency treatment. The scans revealed a blood clot on the surface of his brain that requires an operation. Ted is receiving excellent care and we are being assured that he will recover quickly from surgery." The band, who headline Glastonbury Festival on June 29 and T In The Park this summer, added: "We have no plans to cancel or postpone any other appearances along this current tour". Along with headlining Glastonbury Festival, Mumford and Sons are scheduled to play their biggest ever headline show at London's Olympic Park on July 6. The outdoor event, which is the first headline show to take place on the renovated London 2012 Olympic Games site. NME