Q&A: 大象传媒 crisis explained

Nick Pollard, the former head of Sky News, has delivered a report - commissioned by the 大象传媒 - looking at whether there were any failings in the corporation's management of the Newsnight investigation into allegations of sexual abuse by Jimmy Savile.

The programme did not broadcast its planned report last year, and weeks later 大象传媒 TV ran tributes to the late presenter - leading to accusations of a cover-up.

Here's the background to the crisis, which led to the resignation of the director general.