The Silver Brumby
An icy lake spells danger.

6.25 Noah's Island

6.50 Rotten Ralph
Sarah paints a pet portrait.

7.00 Short Change - the Fat Nation Challenge
The fat content of food.
(Shown on CBBC on Sunday)

7.05 Tom
In the Amazon.

7.30 Raven
How will the warriors fare in the Leap of Faith?

7.55 Newsround

Big Cook Little Cook
Ben makes fish-finger crabs. (S)

8.20 Tots TV
Disco fun. (S)

8.30 Rubbadubbers (R)(S)

8.40 Pablo the Little Red Fox
Pablo explores the city. (S)

8.45 Little Robots
Scary wants to fly to the moon. (S)

9.00 Balamory
Miss Hoolie's visitor is in a pickle. Who can help him?
(S)

9.20 Come Outside (R)(S)

9.40 Tweenies
Bella learns not to pick wild flowers. (R)(S)

10.00 Sergeant Stripes
Mr Draper's red paint is pinched. (S)

10.10 Yoho Ahoy
Swab gets into a lather while washing. (R)(S)

10.15 Bob the Builder (R)(S)

Followed by CBeebies Birthdays

(Repeats are not indicated)

10.30 BBC Primary Geography
(ages 7-11)

10.40 Maths Channel
Quadruple bill.
(ages 5-11)

Westminster update.

Business news.

Live coverage of the Indoor Open at Ponds Forge, Sheffield, where a purse of £70,000 is on offer. Two former world champions - Paul Foster and David Gourlay compete in the second round.
Director Simon Dukes ; Editor Gerard Lane
www.bbc.co.uk/bowls

A couple search for their ideal Dorset retreat - with swimming pool - for under £500,000.

Paul Rankin and James Martin don their aprons.

Elimination quiz.

More dirty dealing on the new quiz show.

Who's setting the dance floor ablaze - and who's clearly cursed with two left feet?

Claudia Winkleman and Lauren Laverne guest.
(First shown on BBC3)

8/8. Being an OS surveyor in the 1930s was back-breaking work, as Nicholas Crane discovers. Braving the wilds of the Scottish Highlands, he conducts his own triangulation survey - will his efforts measure up to the exacting standards demanded by Britain's national mapping agency?
(AD)

Lion - Out of Africa? For lazy lions living on the edge of Kenya's Masai Mara game reserve, slow-moving herds of cows have replaced quick-witted wildebeest at the top of the menu. Unsurprisingly, local farmers have retaliated and, as a result, lion numbers are in rapid decline. Big cat expert Jonathan Scott assesses this feud and another pressing problem - inbreeding within prides. Producer Ingrid Kvale ; Series editor Tim Martin
Repeated next Sunday (AD) www.bbc.co.uk/nature

Britain's red squirrel is in rapid decline, unlike the grey squirrel, an American invader. But why?

In 1966, a bungled circumcision left baby Bruce Reimer without a penis. On the advice of psychologist Dr John Money, Bruce was raised as Brenda. Later, as a troubled teenager, Brenda underwent surgery to become David. He married, raised children - and tragically committed suicide in April 2004. Transcripts of meetings with his psychiatrist and interviews with David and his family illustrate his powerful story.

Gary Grant owns Britain's biggest chain of independent toy shops and plans to take on the giants of children's retailing with a massive expansion programme. His Christian beliefs, however, have put him at odds with Harry Potter, Halloween and Sunday trading. Can his business survive if he continues to put principles before profit? Tom Baker narrates.

With Kirsty Wark.

The Mark Steel Lectures
An offbeat profile of Isaac Newton, the esteemed mathematician who defined the laws of gravity and dabbled in alchemy.

11.50 Reassessing the reputation of Lord Byron, the Romantic poet and society hell-raiser who was "mad, bad and dangerous to know", [web address removed]

A new six-part series begins tomorrow at 11pm on BBC4

Including highlights of the Indoor Open's first quarter-final.

(Repeats are not indicated)

2.00 Geography: South Africa 2000

4.00 PSHE: Child/Junk