The first episode of QI was broadcast on BBC Two, hosted by Stephen Fry.
QI moved from BBC Two to BBC One, increasing its audience reach.
Stephen Fry announced his departure as host of QI after the 13th series.
Sandi Toksvig took over as the host of QI starting from series N.
QI celebrated its 15th anniversary since first airing in 2003.
The first episode of QI is filmed and broadcast, introducing audiences to the unique blend of comedy and trivia.
Alan Davies begins his role as the sole permanent panelist on QI, becoming a key element of the show's dynamic.
Sandi Toksvig takes over as host from Stephen Fry, bringing a new tone and style to the show.
The show moves its filming location to a new studio to accommodate increased production needs and audience capacity.
The production team reveals behind-the-scenes researchers Justin and Jon Mikkelson, shedding light on the volume of trivia fact-checking.
