English cricket chiefs have offered an amnesty to players to report past match-fixing approaches after former Essex bowler Mervyn Westfield pleaded guilty to spot-fixing at the Old Bailey.
Westfield entered a guilty plea to charges of accepting or obtaining a corrupt payment to bowl in a way that would allow the scoring of runs.
Westfield will be sentenced next month and has been warned he will face a jail sentence.
It is already an offence under England and Wales Cricket Board regulations for players to fail to report approaches related to corrupt activities.
But the governing body has established a "window" until April 30 whereby players can report previous approaches without the threat of ECB punishment.