As the current series of Sherlock draws to a close, BBC4 is to broadcast an edition of Timeshift, focusing on the fictional detective and the people who have portrayed him on screen.

A selection of publicity images are available to promote the forthcoming return of Sherlock to our screens on New Years Day.

The legacy of cult TV series Buffy The Vampire Slayer is being examined today by the BBC Radio 4 arts strand Front Row - ten years after the supernatural drama finished in the UK.

The American-made show, which spanned 144 episodes over seven series, aired on BBC2 between 30th December 1998 and 18th December 2003, starring Sarah Michelle Gellar as the eponymous heroine, with Anthony Head as her Watcher, Rupert Giles, and aided by her "Scooby Gang" of friends. It won three Emmys, spawned the spin-off TV series Angel, and proved to be hugely influential on TV plotting and scripting.

Author and novelist Naomi Alderman has made the radio special to examine its impact and, as she puts it, "why there are so few 'daughters of Buffy': strong and complex fictional creations, who aren't simply the sole female lead in a predominantly male cast."

Interviewed for the half-hour programme, which goes out at 7.15pm, are the show's creator Joss Whedon, along with Anthony Head, writers Neil Gaiman and Rhianna Pratchett, TV executives Jane Root and Susanne Daniels, and fans Blake Harrison and Bim Adewunmi.

The show will be available to listen to live worldwide via the BBC Radio 4 site and afterwards via the specific programme site.

Space scientist Dr Maggie Aderin-Pocock is to join the presenting team on The Sky At Night, it was announced today.

She will join existing presenter astrophysicist Dr Chris Lintott when the series returns in its new half-hour slot on BBC Four in February.

Dr Aderin-Pocock is a research fellow at the University College London Department of Science and Technology Studies and an honorary research associate in the Physics and Astronomy Department. Her TV career includes presenting BBC Two's Do We Really Need The Moon? and Do We Really Need Satellites? as well as regular appearances on BBC One's The One Show.

It was feared the long-running astronomy series - which began in April 1957 - would be axed after the death of its host Sir Patrick Moore last December, but it was reprieved after a massive campaign.

Commenting on her new role, she said: The Sky At Night became the longest-running programme with the same presenter in television history.

Over the past year, it has been fronted by a team of regular reporter/presenters, who will continue to appear in the future.

Executive producer Jonathan Renouf said: Cassian Harrison, the editor of BBC Four, said:

A fourth series of the BBC Two comedy Episodes has been given the green light - with the third one yet to air.

Starring Tamsin Greig as Beverly Lincoln, Stephen Mangan as Sean Lincoln, and Matt LeBlanc as a stylised version of himself, the co-production between the BBC and Showtime - an American TV company - will start shooting next year. As with the second and third series, it will comprise a run of nine episodes.

The show is about British husband-and-wife comedy-writing duo Sean and Beverly who travel to Hollywood to remake their successful British TV series, with disastrous results.

Series three - which sees the couple back together following Beverly's fling with Matt - will begin in the USA on Sunday 12th January. A date for its start on BBC Two is yet to be announced. The second series aired in the UK between 11th May and 6th July 2012.

Record-setting astronomy TV series The Sky At Night is to continue following a campaign to save the BBC show.

However, it will lose its 20-minute slot on BBC One and will move to BBC Four, where it is currently repeated in a 30-minute format.

Following the death last year of presenter Sir Patrick Moore, it was feared that the programme - which was first broadcast on 24th April 1957 - would be axed when last month the BBC said its future was being reviewed. That sparked a massive protest, with an online petition garnering more than 52,000 signatures.

Now the BBC has announced that the monthly programme will first air on BBC Four in a half-hour slot from February 2014, with repeats on BBC Two.

Kim Shillinglaw, the head of commissioning for BBC Science and Natural History, said: Cassian Harrison, BBC Four's editor, commented: Moore presented the show from its start to his death and only missed one edition in July 2004 - because of food poisoning - making it the longest-running programme with the same presenter in TV history. The series has been fronted by a team of presenters since Moore's death, including Jon Culshaw, Dr Chris Lintott, Dr Lucie Green, Dr Chris North, Dr Paul Abel, and Pete Lawrence. It is yet to be decided who will present it when it comes back.

Following the announcement of its reprieve, Culshaw tweeted: The next edition will be on Monday 4th November at 12.30am (except Scotland, when it will air at 1.15am). It will be off air in January, when the slot will be taken by the BBC Two astronomy show Stargazing Live, hosted by Professor Brian Cox and Dara O Briain.