With the Rev Tony Burnham.

With Miriam O'Reilly.

With Sarah Montague 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

Clive Anderson asks what are the benefits and costs of class actions that enable thousands of ordinary citizens to sue big firms such as the tobacco and pharmaceutical companies.
Does the cost outweigh the benefit? Are judges best placed to decide these cases or should experts sit alongside them? And should juries be brought for such proceedings?
(Repeated at 9.30pm)

Simon Singh continues his investigation into the history and merits of some of the most special numbers in maths: 23 billion -the magic figure reached in one of the UK's most successful auctions driven by game theory.
Producer Adrian Washbourne email:radioscience@bbc.co.uk

With Jenni Murray.
10.45 Posties Part 2. Drama

Tree Kangaroos. Evolved from a rock wallaby-like ancestor over 5 million years ago, tree kangaroos now exist only in Australia and New Guinea. Today they face an uncertain future in both countries because of forest fragmentation and hunting. Lionel Kelleway meets the scientists who are studying these strange but beautiful creatures. Repeated from yesterday

Mark Little continues his three-part history of Australian comedy. Today he analyses the Aussie comedy stereotype, the cork-hat wearing, beerswilling man, loved and hated in equal measure. He salutes the ground-breaking sketch shows that have held a witty but merciless mirror up to the Australian Character Since the 1960S. ProducerVicky Shepherd

With Peter White and John Waite.
Including at 12.30 Call You and Yours. PHONE: [number removed] UNES OPEN from 10am

With Nick Clarke.

A four-part series in which conductors, performers and experts re-examine familiar pieces of classical music in the light of their own personal experience. 4: Cellist Steven Isserlis , violinist Levon Chilingirian and biographer Brian Newbould talk about
Schubert's String Quintet. Producer Rosie Boulton

Repeated from yesterday at 7pm

A love story by David Constantine.
It is 1933 and 18-year-old Thomas Patterson is lying, still, in Salford Royal Hospital, with his eyes bandaged. Visits from his girlfriend Connie and his mother and father underline both his need for freedom and from what he needs to escape.

For Thomas, lying in his Hospital bed, music and visits from his girlfriend offer him hope that he may see again

Visiting Time 2.15pm R4
David Constantine's play has undertones of DH Lawrence about it: a violent drunken father, a mother racked with grief for the loss of one of her other children, and a son who doesn't want to settle for a dull menial job but to become an artist (in this case a pianist) instead. The would-be musician is a young man called Thomas, lying in hospital with his eyes bandaged, hoping to regain his sight. The visits from his parents soon reveal them to be, metaphorically, as blind as their son, able to see the past only through its horrors (the First World War for the father, Thomas's dead twin sister for the mother). But the visits from his girlfriend, Connie, and the ragtime music he associates with her, offer up hope that this young man will escape the legacy of his parents and leave hospital with both eyes wide open.

Sue Cook and the team investigate more of your historical queries. Contact the programme at [address removed] or email [email address removed]

A chance to hear this classic author's work in the short story form.

The tale of a writer who causes havoc everywhere in the world. Read by John Sharian. Abridged by Duncan Minshull. Producer Duncan Minhull

With Lynne Truss.
As children struggle to learn the association between sounds and letters, it becomes clear that about a third of the letters we require for English are actually missing. Where are they? Why haven't we got them?
(For details see yesterday)

Heather Payton and guests look at the stories that lie behind family businesses.
Producer Rozina Breen Editor Stephen Chilcott

The guide to the wide world of learning returns with Libby Purves. To contact the programme email thelearningcurve@bbc.co.ukor call the Action Line on [number removed]. Producer Sukey Firth Repeated on Sunday at 11pm

With Clare English and Eddie Mair.

Continuing the sketch show from Manchester.
4: This week Helen is obsessing about chocolate. She was looking forward to it being an aphrodisiac but instead it simply made her fat. With Robin Ince , Helen Moon , Smug Roberts and Kate Ward. Producer Graham Frost

David loses his rag. Rptd tomorrow at 2pm

Arts magazine with Francine Stock.

by Julia Darling.
Venetia Love has retired after a lifetime's service in the Post Office. When her son in Australia sends a computer so they can keep in touch via email, she is not impressed.
(For details see yesterday) (Repeated from 10.45am)

British surgeons complain of growing strains on the NHS from botched transplant operations conducted abroad, while doctors in India see poor donors dying after selling one of their kidneys. Gerry Northam asks whether it's time for the Government to allow a controlled trade in human organs.
(Repeated Sunday at 5pm)

Peter White with news for visually impaired people.
Email: [email address removed]

Graham Easton explores thyroid conditions with guest Professor John Lazarus, president of the British Thyroid Association. The programme covers underactive thyroid which affects two per cent of people over the age of 60, the treatment of overactive thyroids, and the importance of blood tests.
Email: [email address removed]
(Repeated tomorrow at 4.30 pm)

Repeat of 9am

With Carrie Gracie.

By Alan Sillitoe.
Arthur meets Doreen but isn't ready to forgo the pleasures of the married sisters, Brenda and Winnie.
(For details see yesterday)

Another chance to meet Giles Wemmbley Hogg : traveller, backpacker, fearless investigator of cultural diversity, and upper-middle-class student ponce of Budleigh Salterton. Written and conceived by Marcus Brigstocke and Jeremy Salsby with additional material by Graeme Garden.
1: This week Giles goes off to ... the Sudan.
Producer David Tyler

Part 2.
(Rptd from 9.45am)