Mull Of Killough will go into quarantine later this week as he gears up for a crack at the Cox Plate in Melbourne, the home town of his ex-pat trainer Jane Chapple-Hyam.

The seven-year-old won the Earl of Sefton Stakes at Newmarket at the start of the year.

He then finished a creditable fifth in the Singapore International Airlines Cup before claiming a fine second in the Summer Mile at Ascot.

Mull Of Killough was last seen finishing just over five lengths adrift of winner Real Solution when eighth in the Arlington Million and his trainer is hoping he can acquit himself well in her home city next month.

"He goes into quarantine on Thursday. He will spend a fortnight here in quarantine and then another fortnight at Werribee (International Horse Centre) on the other side," Chapple-Hyam said.

"He's been invited to the Cox Plate and when you are asked to something like that, you don't turn it down.

"I'm from Melbourne so it would be great to win a race like that.

"It is their premier weight-for-age race and you just don't turn down invitations like that."

Chapple-Hyam is the daughter of former Liberal Party politician Andrew Peacock and his ex-wife, Lady Susan Renouf.