Clancy in charge at Twickenham
Clancy replaces Steve Walsh who has been withdrawn to concentrate on his rehabilitation from a knee cartilage injury.
With Rugby World Cup 2011 rapidly approaching Walsh will be given a further opportunity of time in the middle during the Six Nations, replacing Ireland’s Alain Rolland, who refereed the opening match in the championship, for the Scotland v Italy fixture at Murrayfield on March 19.