Sky Sports Racing presents a blockbuster Friday card featuring Constitution Hill making his eagerly-awaited Flat debut at Southwell. The eight-time Grade One winner, trained by Nicky Henderson and ridden by Oisin Murphy, switches codes after three falls in his last four National Hunt starts. This mile-and-a-half test could determine the superstar hurdler's future direction.

Square Necker presents the obvious danger to Constitution Hill in the SBK Road To Cheltenham Novices Stakes. The four-year-old trained by Kevin Philippart de Foy for Amo Racing broke his maiden at Dundalk in December and looks primed to improve under David Egan. Willie Mullins and Ryan Moore also enter the equation with Daddy Long Legs, adding further depth to the contest.

Ffos Las hosts competitive jumps action with Harbour Island and Rathkenny set to clash in the Download The Fairplay App Novices' Hurdle. The Neil Mulholland-trained Rathkenny has scored in a point, bumper, and now over hurdles after winning at Doncaster. At Southwell, Dingle and Dosman head the weights in a deep handicap, with both having strong recent form that makes them each-way contenders.