The Royal Hunt Cup favourite, Rudimental, heads the team for the trainer, who has saddled two winners and three seconds from his last seven runners at the meeting.
The Redcar Two-Year-Old Trophy winner, Grazia, and Alborada are also likely to be in action, the latter in the Coronation Stakes in which her half-sister Last Second finished second on her reappearance two years ago.
"I love the meeting . . . if they run well," Prescott said. "And if they go there they tend to run OK. Alborada may run in the Coronation and Grazia may run in something - she is in three races. Rudimental should be fine. There is still some way but he is all right at the moment."
Rudimental is 8-1 favourite for next Wednesday's Royal Hunt Cup with William Hill, having finished second to stable-companion Pasternak in the Cambridgeshire at Newmarket last October.
Pasternak himself is set to return to action at York on 11 July in the renamed John Smith's Cup, a race in which he landed a gamble last year.
"He will probably go for the Magnet Cup," Prescott said. "He had flu like the other horses and the Magnet Cup is the first race I fancy for him."
Mary Reveley will have a rare runner at Royal Ascot next week. The Saltburn trainer, renowned for shunning the big southern meetings, is aiming last year's Cesarewitch winner, Turnpole, at Tuesday's Ascot Stakes. He will again be ridden by Tony Culhane, who steered him into second place behind Silence In Court in last month's Chester Cup.Reuse content