In each episode, between 100 and 142 contestants attempted to pass a series of wacky and near-impossible physical challenges to reach the Show Down at the castle against a Japanese actor Takeshi Kitano for a chance to win large cash prizes. Charles co-wrote the programme and commentated throughout all 122 episodes of the four series, and also some special and "best of" episodes. He provided comedy insights into the contestants' abilities, which were designed to appeal to adult audiences, as well as younger viewers - and also coined the term "Keshi Heads" to describe fans of the show. Charles' commentary was so well received that the 2013 reboot featuring Dick and Dom on the voice-overs did not fare as well because he wasn't there, according to complaints that Challenge received via social media. To this day, the Challenge rebroadcasts of "Takeshi's Castle" regularly place in the weekly top 10 for ratings with an average of 130,000 viewers per episode. In 2005, Charles joined the main cast of "Coronation Street", playing philandering taxicab driver, Lloyd Mullaney. Charles introduced aspects of the character himself, making Lloyd a Northern Soul DJ and record collector, and funk music enthusiast. Charles has chosen funk and soul songs playing as backing tracks during scenes, and posters for The Craig Charles Funk & Soul Club and Red Dwarf have appeared in the background. Charles portrayed Lloyd as tough, but kind hearted and romantic, and the character was popular with viewers. Charles added a comedy element to the role, but was also involved in traumatic and emotional scenes with intricate storylines. In 2010, his character was involved in the show's dramatic 50th anniversary tram crash storyline, which was broadcast live. Charles presented documentaries for the show, including "50 Years of Corrie Stunts" (2010), which is included on the "Tram Crash" DVD. In November 2011, Charles took time off from "Coronation Street" to film a new series of "Red Dwarf", returning in April 2012. In February 2014 an online mini-series, "Steve & Lloyd's Streetcar Stories", ran alongside the television show's storyline. In May 2015, Craig announced he would be leaving "Coronation Street" for "Red Dwarf." Lloyd left in a red Cadillac during the live episode on 23 September, although his final pre-recorded farewell scenes with Steve were shown during the following episode. Charles has acted in episodes of popular dramas such as "The Bill" (1995), "EastEnders" (2002) and "Holby City" (2003) and in the comedy "The 10 Percenters" (1996).