WithClairJacquiss.

With Anna Hill.

With John Humphrys and James Naughtie.
6.25, 7.25 and 8.25 Sports News
6.45 Yesterday in Parliament
7.48 Thought for the Day With Rhidian Brook.
8.32 Yesterday in Parliament

War and the Rule of Law. Clive Anderson asks what place international law has before, during and after a war? Do international rules have any place, or are moral and political imperatives more important? Producers Cathy Packe and Bruce Hyman Repeated at 9.30pm

Simon Singh continues his investigation into the history and merits of some of the most special numbers in maths.The solution to one of geometry's oldest problems is 74 percent-the most efficient way of using space when stacking oranges. Why has this only recently solved problem proved so elusive? Producer Adrian Washbourne email:radioscience@bbc.co.uk

With Jenni Murray.
10.45 Where Angels Fear to Tread Part7. Drama repeated at 7.45pm

Chris Mead , the Nightingale Man. Another chance to hear the first in a new series that begins with a special programme paying tribute to birdwatcher and broadcaster Chris Mead , who died earlierthis year. The nightingale had a special significance for Chris, as Lionel Kelleway discovers when he travels to Suffolk. Repeated from yesterday

Mark Little traces the history of Australian comedy. In the first of three progammes he salutes the landmark acts that have defined the Antipodean sense of humour and starts his quest by remembering the vaudeville stars of the 1940s. He finds out that the famously dry Aussie wit goes back to the convict days when it was "laugh ordie". Producer Vicky Shepherd

With Peter White and Liz Barclay.
Including at 12.30 Call You and Yours. PHONE: [number removed] LINES OPEN from 10am

With Nick Clarke.

Repeated from yesterday at 7pm

By MC Beaton , dramatised by David Semple and starring Penelope Keith. Struggling to adapt to life in a Cotswold village after a lifetime spent in public relations, Agatha Raisin determines to make her mark by winning the local baking competition. When the judge is poisoned by her efforts she investigates, only to uncover a web of extra-marital sex and pastry-based favours. So much for the quiet life!
Other parts played by members of the cast

Sue Cook and the team investigate more of your historical queries. Contact the programme at [address removed]or email making.history@bbc.co.uk.
Producers Ivan Howlett and Nick Patrick

2: Winners and Losers. Written and read by Anne Fine. A dutiful son takes some matters of life and death into his own hands. For details see yesterday

2: Why does the other lane always go faster? For details see yesterday

People over 50 control 80 per cent of the UK's wealth. Heather Payton asks why, in spite of this fact, businesses are still obsessed with the youth market. Producer Kirsteen Knight Editor Stephen Chilcott

Radio 4's intelligent guide to the wide world of learning returns with Libby Purves. To contact the programme email thelearningcurve@bbc.co.uk or call the Action Line on [number removed]. Producer Elaine Walker Repeated on Sunday at llpm

With Clare English and Eddie Mair.

Continuing the sketch show from Manchester.
This week the worst therapist in the world prescribes a treatment for a patient with anxiety - a spot of streaking. With Robin Ince , Helen Moon , Smug Roberts and Kate Ward. Producer Graham Frost

Joe goes undercover. Repeated tomorrow at 2pm

Mark Lawson chairs the arts show, which includes a report from John Wilson on another of the contenders for the Gulbenkian Prize for museums and galleries. Producer Sally Spurring

By EM Forster. 7: A Night at the Opera. Philip, Caroline and Harriet seek diversion before they attempt to rescue poor Lilia's baby- and Caroline is enchanted by a new side of Italy and a new view of life. For details see yesterday Repeated from 10.45am

The war in Iraq has created a boom time for the defence industry - but the major manufacturers still face criticism for a lack of transparency in the way they win theircontracts. Allan Urry investigates and reveals new evidence of the extent of the links between government and the industry. Producer Jenny Chryss Repeated Sunday at 5pm

Peter White with news for visually impaired people. ProducerCheryl Gabriel EMAIL: intouch@bbc.co.uk

Does Work Make You Sick? Dr Graham Easton explores occupational medicine - with tips on avoiding repetitive strain injury and what to do when ill-health prevents you from doing yourjob. EMAIL: radioscience@bbc.co.uk
Producer Geraldine Fitzgerald Repeated tomorrow at 4.30pm

Repeat of 9am

With Robin Lustig.

By Alan Sillitoe. 2: After a hard drinking weekend it's Monday morning and time for Arthur Seaton to start another week's work at the factory. For details see yesterday

The final part of a comedy series starring Simon Greenall , KayStonham, Debbie Stephenson and Phil Cornwell. 4: Robin's dream comes true when not one but two real criminal offences are committed on their doorstep and the police come to visit. The only problem is he wasn't there when it happened - but Wendy was. Derek finds a companion in an iguana and Jackie, his ex, feels compelled to return to the scene of the crime. A new series of this programme begins on Friday at 11.30am. Producer Mario Stylianides

Part 2. Repeated from 9.45am