Constitution Hill is lame putting his planned return in next Saturday’s Fighting Fifth Hurdle in serious doubt. The unbeaten hurdler, winner of the 2023 Champion Hurdle, was forced to miss this year’s Cheltenham Festival due to illness and has not raced since Boxing Day last year. As part of his warm-up for a much-awaited return to action he took part in a gallop at Newbury on Tuesday. However he failed to shine in the exercise with stablemate Sir Gino and had to be pushed along to finish