Bookies on Red Alert as Irish Trio Lead Grand National Betting Surge
Irish trainers have won six of the last eight Grand Nationals, and that influence is once again front and centre
With the 2025 Randox Grand National fast approaching, bookmakers are already feeling the pressure from punters — and the real threat lies in three Irish-trained horses that are shaping up to be the worst liabilities in the market.
This Saturday’s renewal at Aintree sees 34 runners set to line up in what remains one of the most bet-on horse races globally. While the Grand National is traditionally a public-facing, mass-market event, the industry focus is on how sharp ante-post activity and Irish dominance are skewing liabilities — with potential for major payout exposure across sportsbook operators.
Irish Dominance Continues to Shape Risk
Irish trainers have won six of the last eight Grand Nationals, and that influence is once again front and centre. The 2024 champion I Am Maximus, trained by Willie Mullins, returns, but it's stablemate Meetingofthewaters who is drawing significant betting volume — despite flying under the radar in recent weeks.
Stumptown, trained by Gavin Cromwell, is another major talking point for traders. Following a strong showing in the Cross Country at Cheltenham, the 8/1 joint-favourite has become William Hill’s worst result. His form, paired with Cromwell’s growing reputation, has made him a magnet for smart money and casual punters alike.
Hewick, the third major threat, brings a compelling backstory and betting momentum. Trained by Shark Hanlon, the former King George winner has been this year’s big ante-post gamble. Described by William Hill as the horse they “need to get beat”, he’s attracting consistent interest, especially with good weather forecasted.
Trading Teams Brace for a Tough Weekend
Lee Phelps, spokesperson for William Hill, noted the challenging dynamics shaping this year’s market:
“Our Grand National book is looking dominated by the Irish. Joint 8/1 favourite Stumptown has been extremely popular since Cheltenham, and Meetingofthewaters remains a significant liability. But Hewick is the real worry — he’s been heavily backed and could go off favourite if the sun keeps shining.”
For sportsbooks, the Grand National represents a unique mix of public interest, promotional volume, and sharp action — making risk management especially complex. With NRNB (Non-Runner No Bet) conditions encouraging early stakes, liabilities are growing ahead of declarations, particularly on well-supported Irish runners.
As the iGaming sector eyes the weekend, operators will be looking to strike the right balance between customer acquisition campaigns and exposure control, especially across omnichannel platforms where the Grand National still drives huge cross-sell opportunities.
With the tapes set to go up this Saturday, the industry will be watching closely — not just for who wins, but who costs the most.
