First Dream has already won twice this season both times at Chelmsford and put up an improved display to win under Freddie Tylicki.
He raced handily throughout, travelling strongly in behind the leaders.
He eased into the lead at the furlong pole before kicking clear to win by easily by a length and three quarters.
Roger said: "First Dream is going the right way. He has done that nicely and should continue to improve."
First Dream in action on Warren Hill