Nico de Boinville will miss key rides aboard highly-touted duo Willmount and Jeriko Du Reponet at Newbury on Saturday following a fall at Doncaster on Friday.

The 34-year-old was riding 13-8 favourite Therapist for his boss Nicky Henderson in the La-Z-Boy At KC Sofa’s Fillies’ Juvenile Maiden Hurdle when coming to grief at the second-last flight, suffering a suspected collarbone injury.

It continues a mixed Christmas period for the rider who tasted success aboard his star mount Constitution Hill and hot Triumph Hurdle prospect Sir Gino at Kempton, but was unseated from Shishkin at the second last when leading Boxing Day’s King George VI Chase.

De Boinville told Sky Sports Racing: “I think it’s a collarbone job. I’ve got to go to the X-Rays and see how we are.

“What can you do, you can’t cry about it.”

Fresh from a first Grade One victory at Aintree on Boxing Day, it is fellow Seven Barrows rider James Bowen who will take De Boinville’s place aboard Willmount in the Coral Challow Hurdle and Supreme Novices’ Hurdle favourite Jeriko Du Reponet in the Coral Committed To Safer Gambling ‘Introductory’ Hurdle.

Bowen also picks up the ride on Steal A March for the King and Queen on the Newbury card, with David Bass taking Bowen’s place aboard outsider Brave Jen in the Challow.

Nicky Henderson is counting on the experience of Willmount coming to the fore as the exciting novice bids to maintain his unbeaten record in the Coral Challow Novices’ Hurdle at Newbury.

Bought for £340,000 after impressing in the pointing field, Willmount performed as expected in his bumper season, winning twice at Doncaster for former trainer Neil Mulholland and creating a taking impression in the process.

Switched to Seven Barrows in the off-season by his owner Olly Harris, he picked up from where he left off for his new handler, registering a bloodless 13-length victory on his hurdling bow at Newbury in November.

He is now tasked with becoming Henderson’s third winner in the final Grade One of the calendar year and is in fact just the second runner he will saddle in the race since Champ’s success in 2018.

“We’re running him because he has a bit of experience and we wanted to split up him and Jeriko (Du Reponet), which was the main idea,” said Henderson.

“He’s a pretty sensible sort of horse and he behaves like he has been at it a while, which he has been in fairness. He had a point-to-point and then two bumpers and one run over hurdles and he knows what he is doing, I hope.

“I hope he’s a horse with a bright future, but it’s a good race – a very competitive race.”

It will be the first time Willmount will race beyond two miles under rules and although Henderson admits he may end up campaigning over further in the future, the trainer does have slight concerns about the prospect of testing ground at the Berkshire venue.

On the step up in trip, he added: “I don’t think it is imperative, I must admit. He doesn’t scream to you that he wants further, but I hope he will cope with it.

“The ground would be the biggest concern. This will be very hard work, I anticipate.”

Paul Nicholls is the race’s most successful trainer and has dominated the contest in recent years, winning the last three renewals.

Denman, Stage Star, Bravemansgame and Hermes Allen all feature on the roll of honour and the Ditcheat handler has a strong hand once again with both Champion Bumper third Captain Teague and the unbeaten Farnoge attempting to uphold the champion trainer’s fine record in the contest.

“We have two nice chances in a red-hot renewal of this Grade One which we have won for the past three years and the more it rains, the better for both my runners,” Nicholls told Betfair.

“Captain Teague ran well when a close second last time at Cheltenham under a penalty. He is an exciting prospect and will gallop all day.”

On Farnoge, he added: “He is unbeaten for us having won his bumper last season and both starts over hurdles and has earned a shot at the Challow as I don’t think he is far behind Captain Teague.

“He made all the running at Ascot, the form looks useful, he stays well, keeps on winning and soft ground will be ideal for him.”

Another heading to the contest with a lofty reputation is Jonjo O’Neill’s Johnnywho, who is unbeaten both between the flags and under rules and sports the green and gold of owner JP McManus, while Ben Pauling’s The Jukebox Man is yet to put a foot wrong since finishing runner-up to Gidleigh Park in a bumper and runs in the colours of Harry Redknapp.

Masaccio was just touched off by a smart Seven Barrows operator in Jingko Blue over course and distance earlier this month and represents the Alan King team that won this in 2016 with Messire Des Obeaux.

Meanwhile, Neil King has elected to step Lookaway up in trip after his three-race winning run came to an end when a gallant second in the Greatwood Hurdle.

“I thought we had the best handicapped horse in England going into the Greatwood, but Mr Henderson had one better, but he ran a terrific race to finish second,” said King.

“He’s been in very good form since, we just gave him a little break afterwards to get ready for Newbury but we had plenty of time on our hands, so he is raring to go now.

“After the Greatwood, both Jack (Quinlan) and I feel that stepping him up in trip might be the way forward to seek out a bit of improvement in him and as a Grade One we need to improve.

“It looks a competitive renewal, but he deserves his place in the line-up and I’m sure if he was trained by Mr Henderson or Mr Nicholls he would be half the price that he is.”

Course runner-up Brave Jen is a second runner in the race for Henderson, with Ella Pickard’s Bullets Hill completing the line-up.

Willmount made the perfect start to life over obstacles with an effortless win in the Agetur UK Novices’ Hurdle at Newbury.

Trained by Neil Mulholland last season to win two bumpers, he moved to Nicky Henderson over the summer and the change of scenery has certainly not done him any harm.

Nico de Boinville found himself in front aboard Oli Harris’ £340,000 purchase after half a mile due to the speed at which his mount was jumping and from then on it was a solo affair.

Only Beny Nahar Road and Onewayortother attempted to keep pace but when De Boinville kicked clear on the turn for home and pinged the third last, the race was over and he cruised to a 13-length success.

“He gave me a lovely feel actually. There wasn’t much pace on so I was happy to just roll away down the back, he pricked his ears nicely and quickened away into the straight,” De Boinville told Racing TV.

“He jumped very nicely, was slick when he needed to be and he could fiddle away as well, which is great.

“He’s very uncomplicated, these pedigrees are showing more and more with their temperament and everything.”

Nicky Henderson is looking forward to going novice hurdling with Willmount having taken over training duties of the unbeaten five-year-old.

Owned by Olly Harris, he commanded £340,000 at the sales following a maiden point-to-point win at Comea in February 2022 and then went on to make an immediate impact under rules last season.

He created a deep impression when partnered by Jamie Moore for his rules debut at Doncaster, scoring by 13 lengths and followed that up with another victory on Town Moor, winning by four-and-a-half lengths under a penalty.

Those two victories came while in the care of Neil Mulholland, but the talented youngster has now been switched to Seven Barrows ahead of the new jumps season kicking into gear.

“He’s only just arrived, he’s a nice horse,” said Henderson.

“He will certainly be going straight over hurdles. He’s a very nice horse actually and he looked a good horse for Neil last year. He looks very well.

“He did look a bit special, and interestingly we all knew he looked quite good because I bought his sister at the Derby Sale in Ireland over the summer hoping he might turn out to be a good horse.”