Ryanair said: "Against evidence and its own earlier findings, the CAA now inexplicably claims that airlines are able to exert buyer power on Stansted in circumstances where Stansted was allowed by the CAA to double its charges in 2007, which caused a five-year, 27% traffic collapse at Stansted while Heathrow and Gatwick were growing. Even easyJet moved flights to Southend to avoid Stansted's high charges."