Ends 9.00.

UBOS
Cassy and friends set off for the Charmling Realm.

7.20 Blue Peter
With Nasa astronaut Piers Sellers. With sign language.
(Shown yesterday at 5pm on BBC1)

7.45 SMart on the Road
The team transform a dull Manchester patio into a playing area.

8.00 The Adventures of Shirley Holmes
Detective adventures.

8.25 Flint the Time Detective
Flint and friends track down the time-shifter Artie in Paris.

8.45 Pocket Dragon Adventures
The Dragons search for the town cryer's missing echo.

Ends 10.20.

Clifford the Big Red Dog
Clifford's friends look for a way to give him the scratching he deserves.

9.15 Bob the Builder
Spud decides he'd like to be a musketeer in the school play.

Followed by CBeebies Birthdays

9.30 Andy Pandy
Teddy is scared by a beetle, and finds an unusual ball to play with.

9.40 Fimbles
Fimbo becomes a bird.
Shown yesterday at 3.25pm on BBC1

10.00 Tweenies
Max tries selling his possessions.

Repeats are not indicated.
10.20 Hands Up! (ages 5-7) The Chronicles of Narnia: The Magician's Nephew (part 2) with sign language 2406781

10.35 Maths Challenge (ages 9-10) TV Workout Year Six: 2-D Shape Facts
8007694

10.50 Words and Pictures (ages 5-7) Phonics Special: "ay" 8095859

11.05 Pods Mission (ages 7-9) Year Three: Growing Plants 1650491

11.20 Landmarks Shorts (ages 9-11) Using the Land: Changing Industry

A phonics special where Sophie Aldred looks at words with long vowel sounds. Sophie attends a surprise birthday party and discovers three words with they 'ay' sound.

Andrew Neil and Daisy Sampson with live debate from the House of Commons and the day's political news.

Finance and business news, presented by Adrian Chiles and Adam Shaw.

Roger Bowdler and Kirsty Wark look back at graves and mausoleums.

Musical drama starring Bing Crosby and Ingrid Bergman. An easy-going priest is called in to help a run-down school, but finds himself at odds with the teaching methods favoured by Sister Benedict. Review page 52. Director Leo McCarey (1945, U)
(BW) Bing Crosby is profiled at 3.30pm

(Digital: BBC London News) Weather

The story of Bing Crosby , one of the most popular recording artists of all time, who in a career spanning half a century also starred in over 100 films.
Director Julia Foot

Culinary contest.

Elimination quiz.

Lisa's Substitute. Mr Bergstrom 's inspirational teaching style brings amorous feelings out in Lisa. Featuring the guest voice of Dustin Hoffman.

Papa's Got a Brand New Excuse. Will is reunited with his father Lou, but Vivian and Philip find it hard to forgive his past transgressions.

Gone. A troubled Buffy undergoes a timely transformation into invisibility courtesy of the Troika, but her absolution from life's responsibilities is revealed to have a physical price. Repeated, uncut, tomorrow at lam

Rule Makers. Adam Hart-Davis looks at how the Victorians' obsession with rules, measurements and standards affected activities from sport to manufacturing. Director Sophie Harris ; Executive producer Caroline van den Brul

Leftovers. Dismayed by British people's tendency to waste food, Giorgio Locatelli rustles up a panzanella for his staff, an Italian salad made with left-over bread. Tony Allan reveals the secret of his popular bread-and-butter pudding, and cooks a traditional pea-and-ham soup.
Director Colette Camden; Series producer Karen Brown

Averting Armageddon. In 1994, astronomers watched as a comet struck Jupiter. The mushroom clouds produced by the collision were as large as Earth itself, and scientists started investigating damage-limitation strategies should the phenomenon occur on our planet. In 2880, an asteroid called 1950 DA is due to hit Earth, and one option being considered as a deterrent - and potential saviour of mankind - is technology that's to be found quietly orbiting space.
Producer Colin Murray ; Editor Matthew Barrett

The Money Shot. Producer Jim and his partner Violet Storm have run a profitable business on the back of a series of hard-core pornographic videos filmed in a camper van. But their relationship starts to suffer when Violet complains that she is not seeing the fruits of their success. The second in this four-part documentary series on money-making schemes is a journey to the heart of the UK's porn industry that's both funny and disturbing. Contains nudity and strong language.
Director Saul Dibb

Presented by Jeremy Paxman.

The Witness. In the concluding instalment of the drama, the reconstruction of Chris's murder threatens to traumatise Robert, but will it help solve the crime?
Cast and credits on Wednesday

Dr No appears on Who Wants to Be a Millionaire? in the hope of paying off his builders, while
Michael Caine comes to Mrs Huggett 's help.

Repeats are not indicated.
Open Science 12.30 Personal Passions - Paul Nurse
12.55 Cell City - City Works 3252347 1.30 Afterthe
Genome 5444892 2.20 Ever Wondered? 7310182 2.30 Uncertain Principles 57347 3.00 A Thread of Quicksilver Curriculum Development 3.30 Aim Higher Languages 4.00 French Journey (part 2) Working in the Arts 5.00 The Future
Open University 6.00 Hidden Visions-the microscopic world
6.30 Lifelines - the theory of evolution's intellectual origins