jockey Michael Nolan faces an investigation into his ride on Celebre D'Allen. The Allan Stennett-owned horse was pulled up by Nolan towards the end of Saturday's gruelling race and subsequently needed veterinary attention on the course at Aintree.

Celebre D'Allen was a 100/1 shot before the off, and he was still in the mix alongside Beauport and Grangeclare West with only three fences left to jump. Other horses eventually clame through as Nick Rockett held off the challenge of I Am Maximus to claim the victory for trainer Willie Mullins whose son, Patrick, was in the saddle.

It was announced by ITV after the race that Broadway Boy, who suffered a nasty fall, and Celebre D'Allen were both being assessed by vets. After a long delay, both horses walked onto horse ambulances to go back to their stables for further tests, and a stewards inquiry was opened into Nolan's ride.

Nolan has ridden 37 winners from 254 runs this season. The Irishman was named stable jockey for Philip Hobbs and Johnson White in 2023 after overcoming a string of injury issues.

The medical attention given to Broadway Boy and Celebre D'Allen delayed Saturday's subsequent races, with The Rosconn Group Maghull Novices' Chase beginning 14 minutes later than its slated 5pm start time.

A statement from the read: "We have a further update for you on the condition of the jockeys and the two injured horses. Tom Bellamy [who rode Broadway Boy] has been taken to Aintree University Hospital for further assessment.

"All other jockeys returned to weighing room. Celebre D'Allen has walked onto the horse ambulance and will go back to the stables for further assessment."

Some viewers were angered that the medical issues suffered by Broadway Boy and Celebre D'Allen were initially given little mention by ITV pundits. It was only around half an hour after the race concluded that host Ed Chamberlain issued an update explaining that both horses were being assessed.

Much of the coverage focused on the winner, and the emotional story of master trainer Mullins seeing his son ride over the line for his first Grand National triumph. "It was some result," a tearful Mullins told ITV. "It is lovely to be able to give your son a ride in the National, but to be able to win it is just unbelievable."