The Irish-born apprentice, who had partnered the unplaced Born In America for Aidan O'Brien in the Dubai Duty Free Mill Reef Stakes, was found using his mobile on the track by a member of the Jockey Club's security team, and was fined �250.

Scallan moved to Britain towards the end of last season from O'Brien's Ballydoyle yard.

He won two Group Three races while in Ireland and finished second in the Irish Derby and in the Eclipse on Sholokhov.

Jockey Club spokesman John Maxse was at Newbury and confirmed the details of the incident on the day that the new 'phone zone' was first enforced on British racecourses.

"One of our racecourse officials saw Scallan using his phone on the racecourse outside of the weighing room," he explained.

"At an inquiry, he admitted that he had heard the announcement in the weighing room 30 minutes before the first race that phones had to be switched off and that he had no excuse for not doing so.

"Consequently, the stewards fined him �250."

Maxse revealed that no jockey had chosen to make use of the 'phone zone' facility all day.

"My understanding is that Mr Scallan wanted to use the area and was told not to do so by the other jockeys," he said.