UB40 singer Duncan Campbell is recovering in hospital after suffering a stroke.A statement from the band said the 62-year-old, from Birmingham, is “up and about” and doing well.Campbell replaced his brother Ali as lead singer of the British reggae group in 2008, after Ali quit over a disagreement about the band's management.The band were due to go on tour next year.A statement from the band said: “We can confirm that our lead singer and brother Duncan Campbell was taken to hospital after