What will we really learn at Southwell on Friday night about Constitution Hill's suitability for the jumping demands of a Champion Hurdle?

Everyone knows a record of three falls in his last four starts over hurdles is the big problem for Nicky Henderson’s once bombproof nine-year-old. His ability to jump at speed has deserted him at times, so going a mile and a half on the flat around an all-weather track won’t give us any indication as to whether he’s over his greatest issue.