Royal Ascot-bound Holler has had a sold work-out between races at Randwick ahead of his departure for England.

The Group One-winning colt was shaded by his older stablemate Federal but did enough to please trainer John O'Shea.

"Holler leaves for England on Tuesday and that will top him off," O'Shea said.

"All is in order for his trip."

Holler will be Australia's sole entry at Royal Ascot where he could come up against last year's Golden Slipper winner Vancouver who is now trained in Ireland by Aidan O'Brien.

O'Shea said a decision whether Holler ran in the King's Stand Stakes on the opening day of next month's Royal meeting instead of, or in addition to, the Diamond Jubilee Stakes on the last day had not yet been made.

The trainer was taken with the gallop of Federal who heads to Brisbane next week.

"Federal will run in a 1500-metre Listed race at Eagle Farm and Sam Clipperton will ride him," he said.