Trainers Oliver Sherwood and Paul Webber have both been fined £4,000 at a Jockey Club Disciplinary Committee inquiry at Portman Square today over their part in the sale of Pru's Profiles at Doncaster Bloodstock Sales in May 1995.
They were found to have acted in a manner prejudicial to the good reputation of horseracing contrary to Rule 220 (iii) of the Rules of Racing.
Webber and Sherwood's legal representative did not offer any evidence.
The decision to hold an inquiry follows a High Court case in November at which owner Gary Heywood was awarded damages of £51,480 against the Curragh Bloodstock Agency.
A judge found that Heywood had been persuaded to pay more than the horse was worth and that Webber, who was then an employee of the CBA, had been involved in collusive bidding with Sherwood.