Nicky Henderson has pinpointed Silviniaco Conti and Last Instalment as dangers to Bobs Worth when his star bids to retain his Betfred Cheltenham Gold Cup crown next month.

Willie Mullins is keen to find out where Upazo ranks in his talented crop of novice hurdlers by letting him line up in the williamhill.com Levy Board Tolworth Hurdle at Kempton this afternoon.