W1A (TV series) cast were created by Morton as new characters. "W1A" was commissioned by Janice Hadlow, controller of BBC Two, and Shane Allen, controller of comedy commissioning. Filming began in January 2014. "W1A" was written and directed by John Morton, who previously worked on "Twenty Twelve" and "People Like Us". The producer is Paul Schlesinger and the executive producer is Jon Plowman. A second series was commissioned in September 2014, with Bonneville's return also confirmed. On 15 September 2014, it was announced that "W1A" would return for a second series in 2015. This began with a 60-minute special on 23 April, followed
BBC Four Four's HD output was broadcast on the BBC HD channel before its closure on 26 March 2013. In 2017 BBC Four HD along with CBBC HD and Cbeebies HD launched in Ireland. The first evening's BBC Four programmes were simulcast on BBC Two. BBC Four is notable for first showing Larry David's "Seinfeld" follow-up, "Curb Your Enthusiasm", Armando Iannucci's cutting political satire, "The Thick of It", "The Chaser's War on Everything", "Flight of the Conchords", "Mad Men" and Danish thriller "The Killing". The channel broadcasts a mixture of art and science documentaries, vintage drama (including many rare black-and-white programmes), and