Contingency plans to run the Cheltenham Festival’s four main championship races at Sandown Park are already in place should the meeting be abandoned.
The Cheltenham Gold Cup, Champion Hurdle, Queen Mother Champion Chase and Stayers' Hurdle would not be switched in name.
Instead, new races run over similar distances carrying Grade One status would be staged at the Whitbread Gold Cup fixture on April 27th and 28th.
Talks have begun with the current sponsors - the Tote, Smurfit Group and Bonusprint - on whether they would back the new events which would run on nine- and eight-race cards each day.
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Similar arrangements are being considered at Aintree, where Grade Two races could be upgraded to Grade One to make up for lost opportunities.