Singer Amy Winehouse is in rehab again after landing herself in trouble with the police, the News Of The World reported on Monday. Sources say the singer was escorted by friend Blake Wood to an exclusive Harley Street clinic on Saturday afternoon. Over the weekend it was reported that Amy was facing arrest for failing to attend police questioning over allegations she hit Sherene Flash, 30, at a party in September. "She’s doing so many drugs she is completely out of it. It’s hardly surprising she missed the interview,” a friend told the Sun. A police source told the paper, “She needs to show the law some respect.”