The first progeny of Frankel to be sold at public auction has fetched STG1.15 million ($A2.1 million) in a package which includes his mother Crystal Gaze.

Ireland's Coolmore snapped up the colt and his dam who is in foal again to Frankel.

MV Magnier, son of Coolmore Stud owner John Magnier, began the bidding and kept going until he secured the pair.

"He has been bought for a racing partnership, and there are four different people in it," Magnier said.

"It's a nice, strong colt and the lads really liked it."

Frankel, who was trained by the late Henry Cecil, set the course alight until he retired unbeaten at the end of the 2012 season.

Owned by Saudi prince Khaled Abdullah, Frankel bowed out in terrific style with his 14th win from 14 races in the prestigious Champion Stakes at Ascot in 2012.

He now commands a stud fee of STG125,000 ($A228,164).

Crystal Gaze and her foal were offered by Tweenhills Stud which is owned and managed by David Redvers.

"It seems like an awful lot of money to pay for a horse and it's a bit sad to see the whole package go, as the mare is a sweetheart," Redvers said.

Gai Waterhouse, who is in England to watch her latest acquisition Bremner run in the King George V Stakes at Royal Ascot, paid STG330,000 ($A602,354) for four-year-old gelding Cafe Society.

The inaugural Goffs London sale mainly featured breeze-up two year-olds and horses in training.

Waterhouse, who trained former English stayer Fiorente to win last year's Melbourne Cup, will assess Bremner before deciding whether to set him for this year's Cup or to wait another year.