Top 40 stand their ground in Saturday's National
That means that Bishops Road, owned by Lytham businessman Alan Halsall, could miss out.
But there is a chance that the horse could still get in.
Bishops Road was set to join the waiting-list as first reserve.
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Hide AdIf any of the declared 40 horses withdraw between now and 1pm on Friday, then Bishops Road would get a run.
Bishops Road has been trained specially for the race, having won the Betfred Grand National Trial at Haydock Park in February, as well as a chase at Sandown in January after being purchased from Ireland by Halsall, who is a director at Aintree.