With the Rev Peter Baker.

With Miriam O'Reilly.

With James Naughtie and Sue MacGregor.
6.25,7.25,8.25 Sports News
6.45 Yesterday in Parliament
7.45 Thought for the Day With the Rev Roy Jenkins.
8.32 Yesterday in Parliament

Michael Buerkwithan 11-part series of interviews with people who have faced a life-changing choice. 2: This week's guest is Waynflete Professor of Physiology at Oxford Colin Blakemore, whose choice to remain a high-profile advocate of animal testing has resulted in a 14-year campaign of kidnap threats and letter bombs against him and his family. Producer Liz Leonard. Repeated at 9.30pm

Five programmes in which Simon Singh explores the history and significance of five numbers.
4: i. A look at the mysterious imaginary number known to many as the square root of minus one.
How are we to picture such a number that doesn't exist in reality, but is the only number needed to solve every equation known to humanity? Producer Adrian Washbourne E-MAIL: scirad@bbc.co.uk

With Jenni Murray. Drama: Mary Barton by Elizabeth Gaskell. Part2. Drama repeated at 7.45pm

Beyond the Blue Horizon. Blue whales are the biggest creatures that ever lived, yet we know very little about them. One of the remaining populations is off the coast of California, but no one knows where they go to breed or has ever witnessed a birth. John Ruthven investigates the blue whale and the vast waters through which it roams. Repeated from yesterday 9pm

A new three-part series in which Mark Thomas looks at the work of comedians who used humour to undermine authority in fifties America, inspiring a generation of comics on both sides of the Atlantic. 1: Mort Sahl: Keep It True and Keep It Funny. A look at the original iconoclast, whose stand-up routines wielding a rolled-up newspaper enraged the McCarthyite establishment. Producer Paul Bajoria

With Peter White and Winifred Robinson.
Including at 12.30 Call You and Yours. PHONE: [number removed]. LINES OPEN from 10am

With Nick Clarke.

Last in the series in which Huw Edwards uncovers the real-life history behind the stories of favourite operas. 4: Carmen. Bizet's masterpiece is probably the best known of all operas. Full of tunes everybody recognises, it is sometimes so familiar, we forget the controversies of class, race and genderwhich make upthis most moving of stories. This episode explores the real history of Carmen, from its disastrous first performance to the phenomenal success its composer dreamed of but never Saw. Producer Martin Gifford

Repeated from yesterday 7pm

After his death, Jenniferdiscovers her husband Bobby to have been twice the man she thought, in Carolyn Bonnyman 's dark comedy about grief, love and Elvis.
Director David Ian Neville

Sue Cook investigates listeners' historical queries. Producers Ivan Howlett and Nick Patrick. LETTERS: [address removed]. E-MAIL: Making.History@bbc.co.uk

2: Not a Nice Person. Fay Weldon reads from her new novel The Bulgari Connection at the Cheltenham Festival Of Literature. For details see yesterday

2: The Wild Wooders Ride into Town. Shopkeepers in Cookham desperately need a car park fortourists. Their plan is to build it on Marsh Meadow where
Kenneth Grahame first thought of Ratty, Mole and Toad. Tempers are raised and everyone wonders who are the real locals and who are the "stoats and weasels". For details see yesterday

Heather Payton and guests with conversation about the world of business, money and technology. Producer Simon Crow

A weekly guide to education with Libby Purves. Producer Penelope Gibbs. TELEPHONE: [number removed].
E-MAIL: the.learning.curve@bbc.co.uk. Repeated Sunday llpm

With Nigel Wrench and Eddie Mair.

A new five-part comedy series by James Cary.
Longleys Bank recruits consultants Unthinkable
Solutions to transform its image. Daisy, Sophie and Ryan persuade Longleys to change its name, its logo and even the design of its bank. At least they can say no company they've ever worked with was ever the same again.
Producer Adam Bromley

Helen and Gregtrythe healthy waters. Repeated tomorrow 2pm

Francine Stock reports from the Courtald Institute gallery at Somerset House, which aims to recreate the experience of visiting an exhibition there in the 19th century. Producer Erin Riley

Mary grows up and takes over the running of the Barton household.
(For details see yesterday) (Repeated from 10.45am)

Current affairs documentary series. The
Government has spentL200 million on its flagship initiative to encourage "lifelong learning" by offering grants to everyone in the country. Mark Whitaker asks if the scheme has succeeded in helping the people who need the money or if the real benefit has been to fraudsters and con men.
Producer Gregor Stewart. Repeated Sunday 5pm

News, issues and information of interest to blind and partially sighted people, with Peter White.
Producer Simon Clancy. PHONE: [number removed] for more information

A new four-part series in which Dr Michael O'Donnell explores the role animals play in a variety of medical experiments. 1: The Serpent's Tale. Venomous snakes are known and feared fortheirpowerto kill, yet they also have the powerto heal, as many patients who have taken heart or circulatory drugs based on their venoms can testify. This programme explores the extraordinary power of snake venom in nature, folklore and modern medicine.
Producer Jeremy Grange. Repeated tomorrow 4.30pm

Repeated from 9am

With Robin Lustig.

Part 7. For details see yesterday

A new series of six magical adventures from award-winning comedians Julian Barratt and Noel Fielding. Howard Moon and Vince Noir are slightly hapless zookeepers, but now that someone's started stealing their animals, it's time to spring into action.
Producer Danny Wallace

Repeated from 9.45am