The beneficiary is SASH, charity for East Surrey Hospital and all the services provided by Surrey and Sussex Healthcare NHS Trust, local to Lingfield racecourse.
New dates will now have to be sought for the four Classics, which are the 2,000 Guineas on May 4 and the 1,000 Guineas on May 5 at Newmarket, as well as the Oaks on June 5 and Derby on June 6.
It has been decided the 2019-20 titles should be awarded on the standings when the sport was shut down on March 17 with racing suspended due to the coronavirus.
Almost five million people tuned in to Saturday's Virtual Grand National won by 18-1 shot Potters Corner as over £2.6million was raised for NHS Charities Together from people betting on the race.