Whose Line Is It Anyway? was created by
Dan Patterson and Mark Leveson in 1988 as a radio show on
BBC Radio 4 in the United Kingdom. This early incarnation of the show is notable as being the origin of its tradition of having the performers read the credits in an amusing style; as it was a radio show, it was necessary for somebody to read the credits, and it was decided that it might as well be done as part of the program, rather than being done by a traditional BBC Radio announcer. This approach to reading credits was pioneered by the earlier BBC radio show ''
I'm Sorry, I'll Read That Again. Indeed, the title of the show itself is a comedic riposte to another radio show, What's My Line, merged with the title of Whose Life Is It Anyway?'', a 1970s play and teleplay. The radio series lasted for six episodes, after which
Channel 4 developed the franchise for television. The British television version lasted for a total of 10 seasons, with 136 episodes, all of which were hosted by
Clive Anderson.
Ryan Stiles and
Colin Mochrie, who would later star in the American version, made their first appearances on the show in seasons 2 (1989) and 3 (1991), respectively. They remained regular cast members for the rest of the show's history, with Stiles becoming a permanent performer in every episode from season 7 (1995) onwards, as did Mochrie from season 8 (1996) onwards. Other regular performers on the US version who first appeared on the UK original were
Greg Proops,
Chip Esten,
Brad Sherwood, and
Wayne Brady. Like Stiles, Proops first appeared in season 2, while Esten and Sherwood first appeared in season 4 (1992). Brady made his first appearance in the UK show's tenth and final season (1998). Other regular performers on the UK series included
John Sessions,
Josie Lawrence,
Paul Merton,
Tony Slattery,
Mike McShane, and
Stephen Frost.
Drew Carey was a big fan of the original British series and was working with Ryan Stiles on the
ABC sitcom
The Drew Carey Show.
Whose Line creator Dan Patterson had been trying to bring the show to the US, and with the success of
The Drew Carey Show, Carey was able to successfully lobby ABC to produce and air a US version of the series, offering to host and become one of the executive producers along with Stiles. The format of the US version was very similar to the UK version. A major difference was Carey's use of the game-show façade. While Anderson's point-scoring had always been arbitrary as a joke, he still presented the points as though they had real weight towards the final outcome of the episode. Carey, meanwhile, explicitly stated at the start of each episode that "the points don't matter," and sometimes emphasized this fact throughout the episodes. Another difference, during Carey's tenure as host, was in the show's ending. On the UK version, the "prize" for winning was to read out the closing credits. On the US version, the winner would take over as host while Carey took part in the last game of the episode, with the performer(s) who read out the closing credits being arbitrary. Later, when
Aisha Tyler took over as host, the show reverted back to the original UK ending. The difference in standards in the UK compared to US prime time meant stricter
censoring of both language and content on the US series. Production of the show was cancelled by ABC in 2003 because of low ratings, with already-produced episodes airing first-run into 2004. The
ABC Family cable channel, which had been airing repeats of the show since 2002, also showed "new" episodes from January 2005 to December 2007, formed from previously filmed but unaired performances.
Hiatus Following the cancellation, Drew Carey went on to create the short-lived ''
Drew Carey's Green Screen Show, which premiered in 2004 on The WB. The series was very similar to Whose Line?'', and featured many of the same cast. The major gimmick on that series was that the acting was done in front of a
green screen, and animators later added cartoon imagery to the scenes. Carey and several cast members also started touring North America with a live-action show called ''(Drew Carey's) Improv All-Stars.
The show was a live stage show similar to Whose Line?'', and featured many of the same games, though also with some new ones. The live shows started in 2003, and since 2006, are only seen on occasion, mostly due to Carey's current television obligations. Colin Mochrie, Brad Sherwood and Drew Carey performed at the Just for Laughs festival in Montreal as "Improv All-Stars" in 2003 and 2004. Since 2005, Mochrie and Sherwood have toured semi-regularly as
An Evening With Colin and Brad. The show was recorded on Stage 29 at
Paramount Studios. Greg Proops and Ryan Stiles presented
Stiles & Proops Unplanned, a live improv comedy show based on the successful
Baddiel and Skinner Unplanned format that took place at
Centaur Theatre in
Montreal, Quebec,
Canada in July 2008. They also tour with former co-star
Jeff Davis under the name
Whose Live Anyway? doing live improv.
CW revival In February 2013, Ryan Stiles revealed in an interview that he would be returning to Los Angeles in April for a new season of
Whose Line, hosted by
Aisha Tyler and featuring the original cast of the U.S. version. The revival was later officially announced on March 1, 2013.
Whose Line Is It Anyway? returned to television in 2013, this time on
The CW, with Colin Mochrie, Ryan Stiles, and Wayne Brady all returning, with Aisha Tyler taking the role of the host. Brady, who became host of a revival of ''
Let's Make a Deal in 2009, began to concurrently star in Let's Make a Deal
and Whose Line Is It Anyway?'' when the 2013 revival began. In addition to the traditional rotating fourth improv player (often drawn from the same pool of regulars that appeared on the original show), a new feature was that of a "special guest". This fifth player would not necessarily have an improv background but would still participate in some of the improv games. The initial 2013 summer run was made up of twelve half-hour episodes, with the three veteran players joined by a featured player, along with a different special guest for each episode who would play in some of the games. On July 29, 2013, The CW announced that it had renewed the show for a 24-episode season, airing Fridays at 8 ET/PT starting March 21, 2014, due to solid ratings. Illness prevented Stiles from appearing in two season 10 episodes, the first episodes of
Whose Line not to include Stiles since episode 7 of the UK show's sixth season back in 1994. Frequent guest Greg Proops filled in for Stiles on these occasions. On July 18, 2014, The CW announced the renewal of the show for a 24-episode eleventh season, which premiered on April 17, 2015. On November 4, 2022, regular performer Mochrie had announced that the show would film its "final" season in January 2023. After the CW stated that this was inaccurate, as no decision had been made yet, Mochrie clarified his comments in a February 2023 interview, saying that the cast never received fair compensation nor were they paid residuals. He also mentioned that producers and cast members referred to it as their last season, and that if the show continues afterwards, it "probably won't be with this cast". Mochrie also voiced displeasure regarding the show's minimal publicity, saying that the cast did most of the publicizing on their own social media. In June 2023, The CW's Head of Unscripted Programming, Heather Olander, stated that she did not know what the future of the series beyond that was and that they had discussed with the cast about whether they wanted to continue with the show. Subsequently, a new season was announced on May 16, 2024. Tyler revealed in an interview in July 2025 that no episodes had been filmed since 2023, and that The CW had no plans for a 22nd season at that time. ==Performers==