Kieren Fallon, Fergal Lynch and Darren Williams will be back in action today after their arrest in connection with allegations of race-fixing.
All three have booked rides, with Fallon due at Salisbury, Lynch at Redcar and Williams at Carlisle.
Solicitors acting for Fallon said last night they expect the six-times champion jockey to be cleared of any allegations of race-fixing following his arrest.
Fallon, Lynch and Williams, plus trainer Karl Burke, were among 16 people detained in dawn raids following an operation co-ordinated by City of London police.
Fallon was later released on bail from Bury St Edmunds police station and whisked away in a car. He will be required to attend a police station in London in two months' time.
He revealed police had questioned him over his involvement with Miles Rodgers, formerly a director of the Platinum Racing Club syndicate.
Rodgers was warned off for two years by the Jockey Club in March after he was found to have made substantial bets on Betfair that two of his syndicate's horses would lose.
He has since described the Jockey Club ruling as "a travesty" and denies wrong-doing.
In a statement, Fallon's solicitor Christopher Stewart-Moore said: "Kieren Fallon has not been charged with any offence.
"Following an interview with the police in Bury St Edmunds he has been released without charge.
"The circumstances that relate to his arrest involve an individual who Kieren Fallon has met on one occasion and whose name he did not even know at the time the meeting happened.
Jockey Club public relations director John Maxse confirmed Fallon could return to action on Thursday.
He said: "In the event that those concerned are released, then I would anticipate that they would be able to continue with their racing and riding, pending any further developments in the police investigation."