In 2003, the show began airing in the UK on the Disney Channel, which was edited for children's viewing.It was picked up by ABC1 which aired the show until the channel's closure in 2007.James Garner and David Spade later joined the main cast as Cate's father and nephew, Jim Egan and C. Barnes, in an attempt to fill the void left by Ritter.After three seasons, ABC cancelled 8 Simple Rules in May 2005 due to low ratings.On July 11, 2005 (less than two months after ABC officially cancelled it), The WB network announced it would air back-to-back repeats of all 76 episodes of 8 Simple Rules from 4–5 p.m.as part of the replacement of Kids' WB with the more broad-audience Daytime WB block.
Kaley Cuoco, Amy Davidson and Martin Spanjers co-starred as their teenage kids; Bridget, Kerry and Rory Hennessy.
The series' creator and showrunner, Tracy Gamble, left the series for a time over creative differences prior to the third season, but he later returned as a consulting producer midway through the third season. Even before the third-season finale's airing, rumors began circulating that 8 Simple Rules was facing cancellation due to Ritter's death and poor ratings.
Gamble was replaced by Judd Pillot and John Peaslee, who had performed the same role in the final season of Spade's sitcom, Just Shoot Me! The Friday night "death slot" ratings took their toll on 8 Simple Rules.
It aired weekdays from January 2, 2006 to September 15, 2006 when it was replaced by Reba upon the merger of UPN and The WB into The CW.
On Tuesday, June 12, 2007, the show joined the ABC Family line-up, airing weekdays from pm to pm Then in September 2008, the show started airing from pm to pm, until October 10, 2008.