Shameless was created and executive produced by Paul Abbott, and aired on Channel 4 from 2004 to 2013 across eleven series and 139 episodes.

The role of young Carl Gallagher was played by twin brothers Elliott Tittensor and Luke Tittensor, who both took on the part in the first series.

The role of Stella Gallagher was recast with Nikita Brownlee during the eleventh and final series.

The show was originally filmed on location on the corner of Wenlock Way and Clowes Street in West Gorton, East Manchester, and at the Pie Factory Studios in Salford, with some scenes shot in Wythenshawe.

After Series 5, production moved to a purpose-built set on the Roundthorn Industrial Estate in South Manchester, built on the site of a former Umbro warehouse, with additional filming around Wythenshawe and Sale.

In 2005, Shameless won Best Drama Series at the BAFTA TV Awards and Best TV Comedy Drama at the British Comedy Awards.

In 2007, Shameless was nominated for Best British Drama at the National Television Awards but lost to Doctor Who, though it won Best Continuing Drama at the Royal Television Society North West Awards, beating Coronation Street.

Dean Lennox Kelly returned for a single episode reprising his role as Kev Ball to mark the show's 100th episode.

HBO first began developing an American adaptation of Shameless after striking a deal with John Wells, before development moved to Showtime by October 2009.

In the American Showtime adaptation, Allison Janney was originally cast as a romantic interest for Frank but left the project after taking a job on Matthew Perry's Mr. Sunshine, being unable to appear in both series simultaneously.

The American version of Shameless, starring William H. Macy as Frank Gallagher and set in Chicago's Back of the Yards neighborhood, ran for 11 seasons until 2021, becoming Showtime's longest-running original scripted program.

Shameless has been adapted internationally beyond the American version, including a Turkish version called Bizim Hikaye (2017), a Russian version titled Besstydniki (2017), and an Indian version called Itti Si Khushi (2025).