Pakistani cricketers Salman Butt and Mohammad Asif have gone on trial accused of spot-fixing during their country's tour of England last summer.

The pair, who have denied the charge, allegedly conspired between Sunday, August 15 and Sunday, August 29 2010 to accept money in return for arranging for deliberate no-balls to be bowled during the Test match between the two sides at Lord's.

The judge, Mr Justice Cooke, told a group of 30 men and women from whom the 12 jurors will be selected that the trial at Southwark Crown Court could last up to five weeks.

The potential jurors were also asked whether they or their families worked within the gambling industry.