Connections of Carlton House believe the step back up to a mile and a quarter will suit The Queen's colt in the Hong Kong Cup.
The four-year-old has not quite been at his best over a mile on his last two starts, but his form over the longer distance puts him in with a fair chance of landing a Royal success.
Carlton House will be having his final start for Sir Michael Stoute before being transferred into the care of Australian trainer Gai Waterhouse.
John Warren, The Queen's racing and bloodstock advisor, said: "Her Majesty is looking forward to Carlton House running in Hong Kong on Sunday, a wonderful race meeting.
"Carlton House's last two starts have been over a mile and now he is going back up to 2000 metres (a mile and a quarter). He has won two Group races over this distance and there is no reason not to pitch him into that department."
Jockey Ryan Moore is equally optimistic of his mount's chance in the Group One.
"He is more consistent than some people think, and there has always been a very good reason for his few less good runs," he said.
"Ascot two starts back was a disaster but in June he had run a terrific race when second to So You Think at Royal Ascot.
"The move back up to 2000m must be a help and when I watched him on the track this morning he looked really well, and that is also what people from the stable are telling me.
"Cirrus Des Aigles is, of course, a problem for all of us."
19 June 2013Perfect Annecdote at Ascot
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Doyle hits treble top on Rizeena
Doyle fits the bill in Hunt Cup
Toronado pointed towards Goodwood
O'Brien keeps faith in Camelot
Kazeem crowned Prince of Ascot
Cambridge Dun and dusted
Perfect Ten in Jersey
Plenty of rain needed for Approval
Banoffee pencilled in for Haydock
Classic rematch in Coronation
Guest has excellent chance
Brittain sweet on Rizeena
Team O'Brien hope for perfect Ten
Chigun aiming for Cambridge glory
Camelot bids for redemption
O'Neill ace proves too sharp
Ballydoyle in command in Coventry
Dawn delivers in thriller
Sole powers to sprint glory
O'Brien sounds War cry
18 June 2013Stevens is king of the Castle
Al Thani snaps up Sandiva
Minute's silence remembers Cecil
Duntle on Cambridge duty
Alive and Just in Ribblesdale mix
Passage heads Gold field
Deegan considers Soprano options
Toro out for Palace glory
Cecil's words not lost on Ponsonby
Dawn out for Palace redemption
Hawkwood supplemented for Hardwicke
Flotilla To Drop Back In Trip
Cecil's Chigun in Cambridge action
Al Kazeem and Camelot clash again
De Kock hoping to make history
War ready for Royal Ascot battle
Kingdom set to reign over Ascot
17 June 2013Magician set for Palace showdown
Cat clings on for Carroll
Three more winners for Lady Cecil
Monaghan delivers on Midnight
Treve in stunning Diane win
Sapphire target for Trees
Beckett mulls Secret options
Nicholls has broken wrist
16 June 2013Songbird aiming to fly high
Movie has Newmarket on radar
Fahey juveniles primed for action
Stubbs leads O'Brien Coventry team
Salsify on summer break
Kempton target for Benbulben
Top trio head Palace runners
Shea Shea shoots for Stand glory
Animal heads Queen Anne field
Saint-Cloud aim for Dunaden
Magician to be declared for Palace
Soul all heart in York sprint
Kingsgate rules Musselburgh
Sam too sharp for rivals
Hughes makes it pay with Knight
Balding on mark with double
Morawij in a hurry in Scurry
Bartley is queen for a day
Big guns to clash in Coronation