Impulsive Star was a significant non-runner at Haydock on Saturday due to restrictions relating to the recent outbreak of equine flu.
Neil Mulholland’s charge was last seen shedding his maiden tag over fences with a determined victory in the prestigious Classic Chase at Warwick and appeared a major contender for the William Hill Grand National Trial on Merseyside.
However, under the new protocols set out by the British Horseracing Authority, no horses are allowed to run in Britain unless they have been vaccinated within the last six months – and not in the last seven days.
Mulholland was informed early on Saturday afternoon that Impulsive Star would not be able to take up his entry, but his stablemate Carole’s Destrier was cleared to run in the same race.
“It’s basically a paperwork issue,” said the Somerset-based trainer.
“He was back at (owner) Robert Waley-Cohen’s place last summer and Robert does a lot of the pre-training, so he didn’t come back to us until late.
“He was vaccinated at Robert’s and because of that it wasn’t on my vets’ list like our other horses.
“I had 36 horses vaccinated last Friday and the vets did a great job sorting out so quickly.
“Unfortunately this horse was missed off the list. It’s nobody’s fault, but it should have been picked up.”
Mulholland confirmed Impulsive Star is now likely to head straight to the National Hunt Chase at next month’s Cheltenham Festival – a race in which he finished fourth last season.