Ends 9.00.

UBOS
Zarlak plans to rid Earth of its entire plant life. (R) (S)

7.20 Blue Peter
Including the launch of the "Britain's Cleverest Animal" competition. With sign language.
(Shown yesterday at 5pm on BBC1) (S)

7.45 SMart on the Road
Mark Speight and "Bizi Lizi" bring new life to a drab Norfolk school field. (S)

8.00 The Adventures of Shirley Holmes
A mysterious new student at Sussex Academy is put in danger thanks to Shirley's exploits. (R) (S)

8.25 The Roswell Conspiracies
Logan makes an unexpected find in a quest to understand his biological father's fate. (R) (S)

8.45 Pocket Dragon Adventures
The dragons are confronted by the dust bunnies. (S)

Ends 10.20.

Clifford the Big Red Dog
Cleo leams that the best type of hero is one who tells the truth.

9.45 Bob the Builder
Spud's lack of dexterity leads him to cheat in the egg-and-spoon race.

Followed by CBeebIes Birthdays

9.30 Andy Pandy
Teddy over-indulges in chocolate, and friends help when Andy catches a cold.

9.40 Fimbles
Roly saves the day when Fimbo's pictures get muddled up.
Shown yesterday at 3.25pm on BBC1

10 00 Tweenies
Doodles learns the value of honesty.

Repeats are not indicated.
10.20 Hands Up! (ages 5-7) The Chronicles ofNarnia: the Magician's 's Nephew (part 1) with sign language 2740177 10.35 Maths
Challenge (ages 9-10) TV Workout Year Six: Equations
10.50 Words and Pictures (ages 5-7) Phonics Special: "ee"
825905511.05 Pods Mission
(ages 7-9) Year Three: Plants 1994887 11.50 Landmarks
Shorts (ages 9-11) Using the Land: Growing Settlements

A phonics special where Sophie Aldred looks at words with long vowel sounds and visits a vet and a farm in Wales looking for words with an "ee" sound.

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

Finance and business news with Adrian Chiles and Adam Shaw. A new hour-long edition is tomorrow at 12 noon.

Quarter-finals coverage from Potters Leisure Resort, Norfolk, as the world's top singles players vie for supremacy in the World championship.

(Digital: BBC London News) Weather

Tammy Wynette is one of her generation's finest country singers, but her roller-coaster personal life -marked by illness, several marital breakdowns and drug addiction - often overshadowed her musical success. Director Tom Ware

Seventies sitcom about a couple who decide to become self-sufficient. Margo is horrified when she hears of Tom and Barbara's decision to keep pigs in the garden. Show more

Culinary contest.

Elimination quiz.

Principal Charming. Homer sets Principal Skinner and Marge's sister up to go on a date.

The Harder They Fall. Will becomes stranded in a mountain forest with his new girlfriend's morose father.

Wrecked. Buffy is in denial about her relationship with Spike, while Willow visits a warlock who casts heavy spells. Repeated, uncut, tomorrow at 1.05am Fancy the Buffy theme on your mobile? Visitvvww.radiotimes.com

Playing God. Adam Hart-Davis enters the Victorian world of science and medicine as he hunts for fossils at Lyme Regis in Dorset, recreates a seance, looks at devices for waking the dead, and views the first antiseptics and anaesthetics. Producer Sam Starbuck : Executive producer Caroline van den Brul

Fish. Despite their contrasting attitudes to fishing -
Giorgio Locatelli loathes it, while Tony Allan is passionate about it - they both agree that Britons need re-introducing to cooking fish. In the second part of their new series, the duo cook pan-fried wild salmon with balsamic vinegar, crab linguine, griddled tuna with rocket salad, and eels with mashed potato and mustard buerre blanc.
Director Daniel Adamson ; Series producer Karen Brown www.bbc.co.uk/food

Narcolepsy sufferers live in a twilight world between waking and sleep, their symptoms including nightmarish hallucinations and paralysing fits. The strange condition baffled the medical world for years, until the recent revelation that drugs could remove the predisposition for unexpected lapses into unconsciousness. These drugs do not just affect narcolepsy patients, however; they could also bring the rest of us closer to a true 24-hour society.

First of a new four-part series on money-making schemes. King Con. Chris Ineson , one of Britain's most notorious fraudsters, is a wanted man. For many years he has overseen, and profited hugely from. dubious business schemes, but is now being hunted by angry customers, the press, the police and the Inland Revenue. This programme follows Ineson in the run-up to his trial for fraud and deception. Directors Rob Davis and Alastair Cook
Executive producers Edmund Coulthard and Grant McKee

Presented by Kirsty Wark.

Madison Blakelock - played by Joanna Lumley -continues to mull over her past in the second of two tragicomic monologue compilations.

Deluded taxi driver Keith (Rob Brydon ) celebrates his birthday with a barium meal, but soon he must face Marion in the divorce court.

Repeats are not indicated.
Open University 12.30 Cancer Pioneers
12.55 Cell City - City Life 3416543 1.30 The Lapedo
Child 5615388 2.20 Ever Wondered? 7581678 2.30 The Science of Climate? 53369 3.00 A Formidable Foe
Curriculum Development 3.30 Teaching Christianity at KS1 Languages 4.00 French Journey (part 1)
Working in the Arts 5.00 Behind the Scenes
Open University 6.00 Sickle Cell - a Lethal Advantage
6.30 The Birth of Liquid Crystals