Senior figures involved in the BBC's recent troubles will be questioned by MPs on Monday.
Michael Prescott - a former editorial adviser who raised concerns about BBC reporting, including Panorama's edit of a Donald Trump speech - will speak on the matter in public for the first time when he appears in front of a House of Commons committee.
An internal memo written by Prescott was leaked to the press, leading to the resignations of the BBC's director general and head of news earlier this month.
Also giving evidence will be BBC chairman Samir Shah, who is under pressure for his handling of the affair, and fellow board members Sir Robbie Gibb and Caroline Thomson.
Caroline Daniel, another former editorial adviser, will also speak to parliament's Culture, Media and Sport Committee from 15:30 GMT.
