Sir John Chilcot has been at the heart of some of the most important political events in recent decades - often in the background, unnoticed by most.

It's only in recent years, since he was asked in 2009 to lead the inquiry into the Iraq War, that his name has come to the attention of the wider public.

Now - nearly six years after he started - the Chilcot Report has yet to be published, and Sir John has come under increasing pressure from politicians, media and the families of soldiers who lost their lives.

Adam Fleming profiles a private man who has had to get used to the spotlight.

Producers: Keith Moore and Joe Kent.