The trial of a journalist who formerly wrote the City Slickers financial column in the Daily Mirror is due to get under way.
The trial is expected to last at least six weeks
James Hipwell and a second man are charged with breaching the Financial Services Act in regards to share tips.
Both men deny the charges against them.
Mr Hipwell is accused of creating a misleading impression of the value of investments in the column.
If found guilty he could face a fine or up to seven years' imprisonment.
The reporter was sacked by the Mirror in February 2000 after the paper's then editor Piers Morgan bought shares in a company which they had tipped.
Mr Morgan was subsequently cleared of any wrongdoing by a Department of Trade inquiry.
The trial of the journalist, which has been delayed by legal submissions, is due to begin on Tuesday and is expected to last for at least six weeks.
The second man, Terrance Shepherd, has also been charged with contravening the Financial Services Act, and denies the charge.
Mr Hipwell previously denied using the paper's column to promote stocks he already owned.
The alleged "share-ramping" took place between 1 August 1999 and 29 February 2000.