Ends 8.00.

The Silver Brumby
Two foals from Brolga's tribe find themselves trapped in a gorge.

6.25 UBOS
Cassy and her friends attempt to put a stop to Zarkek's bid for freedom.

6.45 Dennis the Menace
The recalcitrant boy spends a day on board a ship.

7.10 ChuckleVision
Paul and Barry search their second suspect's flat for clues. (S)

7.30 Really Wild Show
With langurs and a venomous tiger snake.
Shown yesterday 5pm BBC1

7.55 Newsround

Ends 10.30.

Big Cook, Little Cook
Penny the Penguin gives Ben a pair of rubber armbands to help him with his swimming lessons.

8.20 Tots TV
The puppets create their own motorcars.

8.30 Bobinogs
How will Nib, Ogi and Bobin learn to be friends?
First shown on BBC Wales

8.45 Boo!
A cave provides a hiding place for Boo.

9.00 Balamory
Spencer has been invited to the pool - unfortunately he can't swim. Who can help? Cast 3.25pm BBC1 (AD)

9.20 SMarteenies
Pattern designs and another big picture.

Followed by CBeebies Birthdays

9.40 Tweenies
The friends make a picture of the black sky.

10.00 Teletubbies
The friends watch two boys making bread.

Unaccustomed as We Are. Stan and Ollie make a fine mess at dinnertime. (SW)

News from Westminster, including coverage of Prime Minister's Questions.

Ronnie O'Sullivan faces
European Open champion
Stephen Maguire of Scotland in the first of today's remaining ties from round one. Live action over the course of the day from Sheffield's Crucible also sees seven-times world champion Stephen Hendry of Scotland facing England's Stuart Pettman. Meanwhile, 1991 champion John Parrott relinquishes his presenting duties in what figures to be a tough encounter with reigning Masters champion Paul Hunter. BBCi: from 10am digital viewers can access live coverage of both tables, plus news and statistics, via the handset red button

Business news.

Continued live coverage of this afternoon's best-of-19-frames first-round matches, Introduced by Ray Stubbs. Commentary comes from Clive Everton, Ray Edmonds , Terry Griffiths ,
Dennis Taylor , Willie Thorne and John Virgo. BBCi: from 10am digital viewers can access live coverage of both tables, plus news and statistics, via the handset red button

Elimination quiz.

Claudia Winkleman hosts another round of advances and flirtation in the love-triangle dating show.
First shown on BBC3

Hazel Irvine introduces highlights from this afternoon's matches and live coverage of this evening's play. Following co-presenter John Parrott on to the green baize is Steve Davis , who faces the challenge of Nottingham's Anthony Hamilton. The six-times world champion will not want a repeat of last year's first-round exit to compatriot Stephen Lee. Commentary by Ray Edmonds , Clive Everton , Terry Griffiths , Dennis Taylor , Willie Thorne and John Virgo.
www.bbc.co.uk/snooker SBCi: digital viewers can access extra live coverage of both tables, plus a news and statistics service, via the red button on their handset

3/3. Drawing inspiration from the 1965 film The Heroes of Telemark, the survival expert concludes his analysis of the remarkable wartime mission in Norway, undertaken 61 years ago, in which endurance skills helped the Allies to stop Hitler's atomic bomb programme in its tracks. Tonight Mears hears how the heroes of this daring
Second World War mission would like to be remembered. Producer Martin Pailthorpe ; Executive producer Dick Colthurst

On 6 May 1954 amateur athlete Roger Bannister made history by breaking the four-minute mile, a challenge that, up until then, had tantalisingly eluded runners from around the world. To celebrate the 50th anniversary, this documentary chronicles the events that led up to a unique sporting triumph for the young medical student on an Oxford running track, aided by his two pacemakers Chris Brasher and Chris Chataway. Featuring exclusive interviews with Chataway, Bannister himself, and his two main overseas rivals, John Landy of Australia and American Wes Santee. Producer Carl Hindmarch : Executive producers Richard Bradley and Bill Locke (AD)

Snakes and complaining footballers top the list of pet hates soccer pundit Ron Atkinson would like to see consigned to Orwellian oblivion. Will presenter Paul Merton be convinced? Director Geraldine Dowd ; Producer Victoria Payne (AD)

An in-depth analysis of the day's top news stories, presented by Jeremy Paxman.

Highlights from tonight's first-round encounters in the world championship at Sheffield's Crucible Theatre. At this stage last year, eventual winner Mark Williams cruised through against Stuart Pettman 10-2, while Marco Fu of Hong Kong created a shock by beating crowd favourite
Ronnie O'Sullivan 10-6. It was also a bleak round for this year's co-presenter John Parrott , who crashed out to
Australian Quinten Hann 10-5. Commentary comes from Ray Edmonds , Clive Everton , Terry Griffiths , Dennis Taylor , Willie Thorne and John Virgo. BBCi: digital viewers can access extra live coverage of both tables, plus a news and statistics service, via the red button on their handset

Ray Stubbs presents highlights from the daytime session at the Crucible Theatre in Sheffield, as former champions Stephen Hendry and Ronnie O'Sullivan aimed to reach the last 16. www.bbc.co.uk/snooker