Which production company made Sherlock with BBC Wales and WGBH?

Hartswood Films made Sherlock with BBC Wales and WGBH.

Hartswood Films is the British production company behind the series, working with the BBC and with WGBH-TV Boston for the American Masterpiece presentation. The company was founded by producer Sue Vertue, who also served as a producer on Sherlock. Its involvement helped bring the contemporary adaptation from development into production.

Sherlock was created by Steven Moffat and Mark Gatiss, both longtime admirers of Arthur Conan Doyle’s detective stories. The production transferred Holmes’s Victorian world into modern London, using smartphones, websites, GPS, and text messages as updated equivalents of Holmes’s investigative tools.

The other options are companies associated with different television productions, not the listed production company for Sherlock. WGBH’s role can also cause confusion: it supported and presented the program in the United States, while Hartswood Films was the named production company alongside BBC Wales.

The series was filmed largely in Cardiff, with London locations used for the story’s recognizable Baker Street setting.