The director of female cricket at Trowbridge Cricket Club is facing a lifetime ban from the sport after admitting having an affair with a student.

Mark Mullis, 40, pleaded guilty to two charges of sexual activity with a girl when she was under the age of 18 and he was in a position of trust when he appeared at Swindon Crown Court on Friday.

He pleaded not guilty to a third charge relating to a similar offence and prosecutors are considering whether to pursue the matter to trial.

Mullis, of Jenkins Street, Trowbridge, who is also a lecturer at Wiltshire College Trowbridge, pleaded guilty to two counts of sexual activity with a child by a person in a position of trust.

The two offences, which carry a maximum sentence of five years, took place between 2008 and the start of March last year. He pleaded not guilty to the third count, which is a similar charge to the first two.

The court was told the girl said she got talking to the lecturer at the college when they were in the smoking shelter.

Judge Douglas Field adjourned the case until today (Friday) to allow the prosecution time to decide whether to proceed with count three and released Mullis on bail.

The defendant was arrested at the college campus, where he taught practical skills, in late May last year.

Until his arrest he was director of female cricket at Trowbridge Cricket Club in Timbrell Street, but has been told to stay away from the club by the England Cricket Board.

Wiltshire Cricket Board child welfare officer Malcolm Hanson said: “Mr Mullis received a letter from the English Cricket Board barring him from all activity on any ECB site last year. This will stay in place until the outcome of the case.

“If he is put on the sex offenders register he will be barred from any activity in any sport in the UK.

“He will now receive a letter from the English Cricket Board informing him he is barred from any activity associated with cricket for life. He does have the right to appeal.”

Mullis had been a regular player with the club’s second team.

He has also previously been co-manager of the Wiltshire Ladies Cricket Team and has in the past played for clubs in Bradford on Avon and North Bradley.

A spoksman for Wiltshire College said: “Mr Mullis is currently suspended from his employment at the college pending the outcome of all investigations.

“This will remain the situation until the outcome of all investigations by us and other external organisations are complete, this includes any legal proceedings.”