Who are the strictly come dancing judges?

From series 1-6 the judges were:
  • Craig Revel-Horwood
  • Arlene Philips
  • Len Goodman
  • Bruno Tonioli

However, in series 7 Arlene has been replaced by Alesha Dixon, who won series 5. Also, from the quarter final ballerina Darcy Bussel will join the panel as a guest judge.