Mark Johnston launches a two-pronged strike on the Ladbrokes Great Voltigeur with Boscobel and Hearthstead Maison at York on Tuesday.

Frankie Dettori is unable to ride the Sheikh Mohammed-owned Boscobel in Sunday’s Budweiser Irish Derby.

Aidan O'Brien is responsible for nearly half of the field at the confirmation stage for Sunday's Budweiser Irish Derby at the Curragh.