Ends 9.00.

UBOS
Gus accidentally changes history, with devastating results.

7.20 Dennis the Menace
More cheeky fun with the trouble-making stripy jumper-wearer.

7.45 Captain Abercromby
Abercromby is forced to mount a rescue mission when Arthur gets captured.

8.00 The Adventures of Shirley Holmes
Shirley is desperate to retrieve her rucksack after it is snatched by a six-year-old pickpocket.

8.25 The Roswell Conspiracies
Alien terrorists take over an exclusive country club.

8.45 Pocket Dragon Adventures
Scribbles is tricked by a salesman into thinking she's invisible.

Ends 10.20.

Clifford the Big Red Dog
T-Bone tries to conquer his fear after being scared by a ghost movie.

9.15 Bob the Builder
Bob and Wendy accidentally cover a roof with two different tile colours.

Followed by CBeebies Birthdays

9.30 Bill and Ben
The duo offer to help Pry recover her lost favourite treasure.

9.40 Fimbles
Pom finds a musical triangle, but it is soon silenced.
Shown yesterday on BBC1 at 3.25pm

10.00 Tweenies
Max and Judy have to decide whether Squiggles can stay or not.

Repeats are not indicated.

10.20 Science Zone (ages 9-11) Living: Fit for Life

10.40 Megamaths (ages 7-9) Shape: Two-Dimensional Shapes

11.00 Look and Read (ages 9-11) Spelling with the Spellits Year 5-6 (Programme 1)

11.20 Social Inclusion Dramas (ages 7-11) A Fish Out of Water

11.40 BBC Primary Geography (ages 7-9) Weather, Place and People: Mediterranean Spain

A new hour-long edition of the finance and business review, with expert advice on how to invest a lump sum and investing for children. Presented by Adrian Chiles and Adam Shaw.

Live coverage of the concluding quarter-final matches in the World championship singles events, from the Potter Leisure Resort in Norfolk. The winner of the title will receive a record f28,000, a figure estimated to be the biggest single prize ever offered in the sport. Reigning champion, England's
Tony Allcock , will be hoping to retain his position, having declared his intention to retire from top-class bowls at the end of the current indoor season. Including, at 3.20, News; Regional News (Digital: BBC London News); Weather

Ainsley Harriott hosts another round of the against-the-clock culinary challenge.

Elimination quiz, presented by Anne Robinson.

Oh, Brother, Where Art Thou?
Homer is very pleased with what he finds when he tracks down his half-brother.
Featuring the guest voice of Danny DeVito.

Mis for the Many Things She Gave Me. Philip's old college girlfriend visits the Banks family and seduces Will. Featuring a guest appearance by Pam Grier.

Series two champion Panic Attack is back, but can it repel the advances of Kronic 2 and Terrorhurtz? With Craig Charles , Philippa Forrester and Jonathan Pearce. Director Derek Wheeler ; Series producer Bill Hobbins
First shown on BBC Choice

Clarissa Dickson Wright and Johnny Scott celebrate
Britain's rural life as they return forthis eight-part series.
The duo visit the Caerlaverock Estate, located by the River Nith in Dumfries and Galloway. Here they try haaf-netting, a fishing technique introduced by the Vikings.
Director Don Coutts ; Series producer David Peat

Naked Garden. Chris Beardshaw shows how coloured stems, barks and stalks can be vital sculptural ingredients to adorn a naked winter garden. In search of inspiration, he takes his helicopter to Hampshire, discovering that the season is the ideal time for seeing the "bare bones" of the British landscape. Series producer Kathy Myers www.bbc.co.uk/gardening BBC MAGAZINES: Gardens Illustrated, L3.50. New issue on sale 21 January. Gardeners' World, £2.60

For over 1,000 years, Maya kings ruled Central America's jungles. While Europe was just emerging from the Dark Ages, they were great architects, artists and mathematicians. Then, at the height of their power, they abandoned their cities and vanished. Timewatch follows archaeologist
Kathryn Reese-Taylor on an expedition to unravel the mystery. Director/Producer Martina Balazova

More tips on how to feast from Mother Nature's larder.
Series producer Patrick Flavelle (Revised repeat)

Presented by Kirsty Wark.

Cultural review with guests Jeanette Winterson , Tom Paulin and Will Self joining presenter Kirsty Wark.
Producer Tanya Hudson Repeated next Sunday on BBC4

Another chance to see part one of this sci-fi drama.
See Saturday's choice. Shown Saturday at 9pm Spielberg's sentimental sci-fi: page 22

Uncut version.
Shown yesterday at 6.45pm

Bull-fighting, donkey-throwing and lisping? Spoof historian David Oxley looks at what Britain would be like if the Spanish had won in 1588. Show more

Horror, starring Boris Karloff.
A Greek general sets out to discover what has happened to his late wife's missing body. Review page 43.
Director Mark Robson (1945, 15) (BW)

Repeats are not indicated.
National Test Revision Revisewise at School: English 1