Star apprentice Oisin Murphy will have his first ride in the Epsom Derby with Ed Dunlop booking him for Red Galileo.

Murphy spend the northern hemisphere winter in Australia with Flemington trainer Danny O'Brien and created a big impression with 13 winners from 89 rides.

He has also secured the ride on the William Knight-trained course specialist Beacon Lady in the Coronation Cup on the Derby program.

Red Galileo had some promising two-year-old form but has been fairly well beaten in the Sandown Classic Trial and Lingfield Derby Trial.

"We had a list of possible jockeys and after watching him win the Temple Stakes, the decision was made to book Oisin," Dunlop said.

"My horses were ill earlier in the year, but this horse was supplemented and Mr Arculli (owner) is very keen to run.

"He's got a ride in the Coronation Cup earlier in the day, which will be good experience."

Beacon Lady, a late entry into the Coronation Cup, shows by far her best form at Brighton and Epsom, where she bolted up in the Great Metropolitan Handicap at the April meeting.

"Oisin has won on her before and knows her well, which is important," Knight said.

"She has pretty much been ridden by apprentices all her career."

Murphy claimed the biggest win of his career aboard Hot Streak in the Group Two Temple Stakes at Haydock last month.