The Kevin Moses-trained All Legal has ended the recent dominance of the Darley team in the Ladies Day Cup at Hawkesbury by taking out Thursday's Listed event.

Peter Snowden-trained, Darley-owned runners had won the $100,000 race for the past three years and had two competitors in this year's renewal.

But they failed to fire as All Legal swept down the outside to defeat Triple Elegance by a half-length in the 1300m race, with a long head to Dee'n'Gee third.

The Snowden-trained Forfeiture and Quidnunc were unplaced.

On a day of delays at Hawkesbury, jockey Glyn Schofield said nothing was going to stop All Legal in the run to the line as he registered his fifth career win.

"He was never going to get beaten in the run," Schofield said.

"I got a little tighten-up at the start but it allowed me to grab hold of him and he put himself on the bridle.

"I followed Christian Reith who was three-wide on Forfeiture and it never felt like he was going to be beaten."

Moses' wife Jenny, who is a part-owner of All Legal, said the gelding could progress to the Goulburn Cup.

"He's only a tiny horse so he's better when he's in a better grade of race down in the weights," Moses said.

The start times for the races at the Hawkesbury Gold Cup meeting were put back by one race because there was no ambulance on course before the scheduled start time for the opening event.

The ambulance had been booked by the Club but there was a mix-up.

"The ambulance service advised us they made an error in not assigning an ambulance for the meeting," deputy chief steward Marc Van Gestel said.

The meeting was then held up for close to half an hour between the fourth and fifth races as officials waited for storm activity and lightning to pass over the area.