Secret Stable Races.

It used to, decades ago. I'd be surprised if any leading stable does it now.

Godolphin public/private trials were possibly its last knockings.

Would make sense if you were a trainer with some good yardsticks and want to see if something well handicapped. But a proper race against each other would take something out of a horse and Mullins for example can mop up races to see how good they are against other yards.

apparently was the downside of inviting Lester to come and ride work. Would probably only have been interested in showing up at 7 in the morning unless he was going to ride the ears off it.....