Ends 8.00.

The Silver Brumby
An escaped lion terrorises the animals living in the bush.

6.25 UBOS
Verne doesn't trust the new school librarian, feeling that his 1000-year-old memories are all too familiar.

6.45 Dennis the Menace
Dennis, Gnasher, Curly and Pie-face meet at the treehouse to trade bathtime stories. (AD)

7.10 ChuckleVision
Paul and Barry try to find the missing ruby.
Today and Friday's episodes written by Rory Clark

7.30 Blue Peter
The first of two special sporting extravaganzas as two teams of CBBC presenters battle it out.
Shown yesterday 5pm BBC1

7.55 Newsround

Ends 10.30.

Big Cook, Little Cook
Ben and Small make a mushroom dish for Ernie the Elf.

8.20 Tots TV
The Tots follow Jane to see a hippo.

8.30 Bobinogs
Ogi feels nervous as the Bobinog band prepare to perform at the dragon concert.
First shown on BBC Wales

8.45 Boo!
A trip to the circus prompts
Boo to try his hand at being a clown.

9.00 Balamory
Josie suggests a use for some empty boxes that Suzie is throwing out from the shop.
Writer Kath Yelland
Cast on Wednesday BBC1

9.20 SMarteenies
The gang make pictures by finger painting.

Followed by CBeebies Birthdays

9.40 Tweenies
Jake tickles everyone with a special feather, leading them to believe a tickle monster is on the loose!

10.00 Teletubbies
Three boys fill a sand pendulum and make a picture. Meanwhile, Tinky Winky, Dipsyand Laa-Laa follow Po around.
BBC products: Teletubbies: Again Again!, video £7.99, DVD £10.99

Springbok of the Kalahari A focus on South Africa's beautiful yet vulnerable antelopes.

Their First Mistake. Stan and Ollie are left holding the baby when Mrs Hardy files for divorce. (BW)

Professionals reveal their tricks of the trade.

Westminster update.

Business news.

Hazel Irvine and Steve Davis present this afternoon's coverage, which includes the conclusion of Jimmy White 's match with Barry Pinches. The Whirlwind has played more matches at the Crucible Theatre than any other player, and he will be hoping to add to that tally after today's game. Live action sees 2001 champion Ronnie O'Sullivan up against Stephen Maguire , the second player making his Crucible debut this year. BBCi: from 10am digital viewers can access live coverage of both tables, plus a news and statistics service, via the red button on their handset

Elimination quiz.

The love trangle dating show continues. Has cupid's arrow found its target, or is it a case of "just good friends"? Presented by Claudia Winkleman.
First shown on BBC3

In pursuit of an eighth world title, Stephen Hendry begins his 2004 campaign against Stuart Pettman , who is making only his second appearance at the Crucible. Hendry was definitely not on top form in the first round last year, having to battle hard to secure an uninspired 10-7 victory over Englishman Gary Wilkinson. However, he went on to recapture his form later in the tournament, bagging his 100th century break at the Crucible. Presented by Ray Stubbs and Steve Davis. Commentary by 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

4/8. The Stonehenge of the North. Mark Horton , Dave MacLeod and Jo Caruth investigate an area of North
Yorkshire landscape which stretches for more than a mile and is dominated by an arrangement of giant earthworks, banks and ditches. Research into the subsequent discovery of three huge amphitheatres built over 5,000 years previously leads archaeologists to uncover an astronomical link to suggest that these buildings, which attracted Neolithic pilgrims from across Britain, were one of the country's first temples to the heavens.
Director Richard Maude : Series producer Steve Evanson

From its humble beginnings, when its launch night was marred by a power cut that left viewers with just a news bulletin and the message "BBC2 will start shortly" to watch, through to its glory days, the channel celebrates its 40th anniversary by looking back over the people and programmes that have contributed to its success, as programme-makers reveal behind-the-scenes stories about popular shows.
Many of those featured - including The Likely Lads; Arena; The Old Grey Whistle Test; I, Claudius; Edge of Darkness; Boys from the Blackstuff; Not the Nine o'Clock News; Top Gear; and Little Britain - demonstrate the channel's success with diverse projects, but it has also seen its fair share of failures, such as The Borgias.
Throughout the retrospective, the Dead Ringers team perform topical sketches, and excerpts from letters written by readers of Radio Times shed light on the channel's effect on the viewing public over the years.

BBC2's finest moments: page 14

With Gavin Esler.

Highlights from tonight's matches in Sheffield. Stephen Lee plays the concluding session of his match against Lee Walker , and Stephen Hendry starts out against
Stuart Pettman , making a return to the Crucible after his debut there last year. Presented by Ray Stubbs. BBCi: digital viewers can access extra live coverage of both tables, plus a news and statistics service, via the red button on their handset

Hazel Irvine introduces highlights of the day's matches. Including Stephen Maguire v Ronnie O'Sullivan ,
Stephen Hendry v Stuart Pettman , and Stephen Lee v Lee Walker.

www.bbc.co.uk/iearningzone
Schools Repeats are not indicated.
2.00 Key Stage 3 Bltesize Revision Maths 3. Handy hints and tips for the Maths 3 paper. 20421 4.00 GCSE Bltesize Revision Maths 3. A review of space and shape, and data handling modules.