12:04pm
Rain has no impact
Andrew Cooper, Epsom's clerk of the course, believes the rain that fell this morning will not impact on the official going.
A sharp shower fell as racegoers waited for the gates to open around 10.30 and though heavy cloud remains, the rain has stopped.
Cooper said: "I don't envisage any great change. What I would say that whereas the round course is more good than good to firm, the straight course has seen as much if not more water but drains quickly and is more good to firm than good."
The official going is good (good to firm in places).