Ends 11.00.

Teletubbies: Walking in the Woods
Laa-Laa wants to give the others a big hug, then the quartet watch some children who are going for a walk in the woods.
(R) (S) [web address removed]

7.25 Yogi's Space Race
Animated adventures in space with Yogi Bear and his friends.
(R)

7.45 Goober and the Ghost Chasers
The occasionally invisible canine gets involved in more animated fun as he and friends travel the world in search of ghostly goings-on.
(R)

8.10 Blue Peter
The winner of the Expo Design a Garden is announced, plus some creepy-crawly studio guests.
(Shown yesterday at 5.10pm on BBC1) (S) (W)

8.35 Ace Ventura - Pet Detective
Animated fun with the sartorially challenged private eye.
(R) (S)

9.00 Goosebumps
Live-action horror drama. In the first of a two-part story, a boy who treated his younger brother badly is packed off to a summer school - to be transformed into the perfect student.
(R) (S)

9.25 Really Wild Show Wildest Hits
In an edition devoted to species and locations of an extreme nature, Michaela Strachan spots animals in New Zealand's caves, while Chris Packham joins her to see polar bears. Plus how baby penguins endure very low temperatures, a view from a submarine and hardy bugs. With Howie Atkins and Janice Acquah.
(S)

9.50 The Big Knights: Village Games
The inhabitants of Borodzo put a cunning plan into action to keep Sir Boris and Sir Morris away from their annual sports day.
(R) (S)

10.00 Little Bear
Triple bill of cartoon fun.
(R)

10.30 Tweenies: Rolling
Milo asks the others to help him to find his fire engine's missing wheel.
(Shown last Thursday BBC1) (S) (W)

10.50 Bob the Builder
Animation, with the voice of Neil Morrissey.
(R)

Disney comedy starring Jan-Michael Vincent.

On safari in Africa, two struggling athletics coaches see a long-haired blond youth in a loincloth race past a gazelle. The coaches then try to persuade the youth to accompany them back to their college in America to revive their fortunes.
(1973, U) (S)
Films: pp 66-74 ***

A roundup of the latest business and consumer news.

Live coverage from the Crucible as the first semi-final, played over the best of 33 frames, gets underway. Scot Stephen Hendry overcame the penultimate barrier to his seventh world title last year with a 17-13 victory over England's Ronnie O'Sullivan.

Introduced by David Vine and Dougie Donnelly. Commentary by Ray Edmonds, Clive Everton, John Parrott, Dennis Taylor, Willie Thorne, John Virgo
(S)

Including at 3.20 News, Regional News (S), Weather

Picard travels from past to future in a desperate attempt to prevent the destruction of humanity. As he lives and relives various experiences, he is forced to acknowledge that he may be to blame for the mistake that doomed civilisation.
(R) (S)

Continued live coverage from the world championship in Sheffield, as the second semi-final begins at the Crucible. Presented by Dougie Donnelly.
(S)

In tonight's edition of the vintage comedy show, Eric and Ernie perform their own, very individual version of Come Dancing, and re-enact the Battle of Waterloo - in miniature.
(First shown on ITV) (BW) (S)

Followed by When I Grow Up
Young people from around the world discuss their views of the future.
(S)

Ray Mears continues his travels to inhospitable places.

RAF crews can find themselves in action almost anywhere in the world, and, if they are shot down behind enemy lines, their survival may depend on detailed knowledge of how to survive in environmental extremes - including desert, jungle, forest, the Arctic or even at sea.

Mears joins 20 airmen and women as they undergo the RAF's survival training course. He spends a week living rough in shelters on Dartmoor, where he traps squirrels and birds, lights fires and cooks what he catches. Adding to the discomfort, the group are then sent out on the run for three days and nights with a hunting party on their trail.
(S) (W)

Motoring magazine show. Hard on the heels of Sunday's British Grand Prix at Silverstone, Vicki Butler-Henderson takes a ride in an Arrows Formula One racing car. Plus the usual roundup of automotive reviews and advice. With Kate Humble, Tiff Needell and Quentin Willson.
(S) (W)
Magazine: £3.30 from newsagents
Website: [web address removed]

Further semi-final action, with both matches decided over four sessions and the best of 33 frames. David Vine introduces the action.
(S)

With Jeremy Vine.
At 11.00 News headlines.
(S)

Romanian Robert is one of 10,000 illegal immigrants caught each year trying to enter Austria from eastern Europe. He is an economic migrant who wants a job in the EU so that he can provide a better life for his family back home. Dutch farmer Henke is also an economic migrant, but he wants to leave the Netherlands and buy a farm in Poland, where the land is cheaper and he would be free of the EU's agricultural restrictions. This film examines each man's reasons for his course of action.
(S)
(Wanderlust concludes the series tomorrow at 11.20pm)

Kathleen Byron reflects on her role in the Oscar-winning 1947 film Black Narcissus, directed by Michael Powell and Emeric Pressburger.
(R) (S)

Parliamentary analysis.

Repeats are not indicated.

Open Science
12.30 The Mother of All Collisions
1.00 The Ascent of Man: Generation upon Generation
1.45 What Have the Sixties Ever Done for Us?
2.00 The Great Iron and Steel Roller Coaster
2.30 Rocks for Roads
(S)

Curriculum Development
3.30 ICT Getting Started in the Secondary School

Languages
4.00 75th Anniversary - More German Gems

Working In Health and Care
5.00 The Future

Open University
6.00 Cosmic Recycling
(S)
6.30 Venus Unveiled
(S)
Ends 7.00am.