The son of Oasis Dream has been in good form of late and was last seen finishing second in Listed company at Salisbury a month ago.
He made almost every yard of the running under Andrea Atzeni and kept enough up his sleeve to hold off Baracuda Boy by three-quarters of a length.
Roger said: "It is great to see him back in the winners' enclosure. This race was perfect for him and he has done it nicely."
Notary made a very pleased debut for Cheveley Park Stud when a close-up third in the seven-furlong fillies' maiden earlier on the card.