1958 is drawing to a close as the residents of Poplar prepare for Christmas. Festivities are thrown into chaos when an unexploded bomb is discovered close to Nonnatus House, causing mayhem among the nuns, midwives and residents of Poplar just days before Christmas. Everyone is evacuated from their homes, and the midwives of Nonnatus House are tasked with overseeing the rescue centre until the bomb is made safe. Jenny Lee finds herself drawn into the lives of young couple Yvonne and Alan Bridges, who are expecting their first child. Since fighting in the Korean War, Alan has suffered from post-traumatic stress disorder and Jenny, with the help of Trixie, becomes instrumental in helping him to overcome his fears. Elsewhere, Shelagh Mannion, formerly Sister Bernadette, and Dr Turner prepare for their understated wedding. But when Timothy is struck down with a potentially fatal illness, their plans are put on hold while they keep vigil at his bedside.

The universe's deadliest species gather near a quiet backwater planet, drawn to a mysterious message that echoes out to the stars. And amongst them, the Doctor.

Bid the eleventh Doctor, Matt Smith, a fond farewell in this hour long retrospective documentary special about Doctor Who series five, six and seven – “the Matt Smith Years.” This compelling documentary, narrated by Alex Kingston (Doctor Who’s River Song), features highlights from Smith’s run with interview footage from the man himself, his cast-mates, writers, producers, guest stars and celebrity Whovians.

It is summer and debutante Rose is to be presented at Buckingham Palace. The family are at Grantham House, their London home, preparing for the busy social programme. Never one to miss out on such a grand occasion, Martha Levinson sails in from New York with Cora's recently disgraced brother Harold in tow. Both outspoken and larger-than-life, they create quite an impression amongst certain members of London's high society. When the Crawleys are implicated in a scandal that threatens to engulf the monarchy, Robert goes to great lengths to protect the royal family, as well as his own.

Unlocking Sherlock is a one-hour special that explores how writers Steven Moffat and Mark Gatiss created the hit television sensation. The special takes viewers on a personal voyage through the versions of Holmes that have served as inspirations for the new series – the original stories, their factual origins, hundreds of film adaptations – to arrive at their thoroughly modern Sherlock. Moffat and Gatiss explain the challenges they encountered adapting the original adventures of the iconic super-sleuth. The special goes behind the scenes on the set of the hit television series, and includes interviews with actors Benedict Cumberbatch, Martin Freeman and Lara Pulver, who talk about the reinvention of their fictional characters.