Kirsty Young's castaway is the broadcaster and religious leader, Lord Indarjit Singh.

Producer: Sarah Taylor.

Kirsty Young's castaway is the mental health campaigner and Chief Executive of SANE, Marjorie Wallace.

After leaving University College London with a psychology and philosophy degree, her first job in the media was working on The Frost Programme with David Frost. She went on to produce religious programmes and became a current affairs reporter and director for the BBC. She joined the Sunday Times Insight team as an investigative journalist and wrote a series of articles highlighting the financial and emotional plight of young Thalidomide victims. Her articles on mental illness - The Forgotten Illness - elicited a huge public response and in 1986 she founded the mental health charity SANE. She has received numerous awards for her journalism and books and has twice won the Campaigning Journalist of the Year award.

In December 2008 she was awarded the CBE for services to mental health.

Producer: Sarah Taylor.

Keith Richards, member of the Rolling Stones, is interviewed by Kirsty Young for Desert Island Discs.

Keith was born in Dartford and grew up as an only child. He and Mick Jagger went to the same primary school, but then lost touch until meeting again at Dartford train station in 1961 and discovering they shared a taste in blues music. Keith picked up his love of the guitar from his grandfather and honed his skills whilst at art college.

If one single, living person could be said to personify rock n' roll then it is surely him. He's been making music and causing havoc for over half a century and counting. His song writing, singing and guitar playing have helped to make The Rolling Stones a stratospherically successful group and his early and single minded dedication to the triumvirate pursuits of sex and drugs and rock and roll made him a counter-culture icon.

No surprise then that as a boy he would go to sleep at night with his arm around his first guitar.

Producer: Sarah Taylor.

Kirsty Young's castaway is Professor Sue Black.

She is Professor of Anatomy and Forensic Anthropology at the University of Dundee, founder and past President of the British Association for Human Identification and heads the Centre for Anatomy and Human Identification in Dundee.

Brought up on the west coast of Scotland and in Inverness, she fell in love with biology at secondary school and read Human Anatomy at the University of Aberdeen. After graduation she worked at London's St Thomas' Hospital as an anatomist and police began to call on her to help identify bones.

In 1999 she travelled to Kosovo, tasked with investigating the site of a mass shooting. She has worked in areas of conflict including Iraq and was part of the team helping to identify victims of the 2004 Indian Ocean tsunami.

She was awarded an OBE in 2001 for her services to forensic anthropology.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is Lemn Sissay.

As a poet, writer and playwright, much of his work tells the story of his search for his birth parents. Born to a young Ethiopian woman who wanted him temporarily fostered while she completed her studies, he was with a family until he was 12. He would spend the next five years in a number of children's homes where he began to write. On leaving care at 17, he self-published his first book of poetry while on the dole.

Several poetry collections, plays and programmes for radio and TV followed and his work has taken him around the world. He was the first poet to be commissioned to write for the 2012 London Olympics and his success has also brought him two doctorates and an MBE for services to literature. He is about to be installed as Chancellor of the University of Manchester, an elected post he will hold for the next seven years. He takes writers' workshops for care-leavers and set up Culture World, the first black writers' workshop.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the musician, Alison Balsom.

Widely considered the finest classical trumpet player of her generation, she's performed in all the great concert halls of the world, winning a huge amount of fans and a string of awards for her ability to exquisitely convey the many voices of her chosen instrument.

As a child she had dreams of being a part-time trumpet player, astronaut and jockey - she's only 36 so there's time yet for the other two; but whilst she is solely devoting her energies to her instrument her belief in the power of music seems endless. In between gigs, rehearsals, recordings and motherhood, she's found time to travel to Uganda and Liberia as patron of Brass for Africa, with the heartfelt conviction that she can transform the lives of street children by teaching them to play.

Producer: Sarah Taylor.

Kirsty Young's castaways this week are the comedy writers Laurence Marks and Maurice Gran.

Grammar school boys from North London they first met as ten year olds at a youth club, growing up to have 'real jobs' in the civil service and journalism, before finally embarking on the precarious business of making a living from putting words into other people' mouths.

Producer: Sarah Taylor.

Kirsty Young's castaway this week is Dame Judi Dench.

Born into a family with dramatic leanings, she followed one of her older brothers, Jeffery, to drama school. Having abandoned ideas of becoming a set designer, she made her professional debut as Ophelia at the Old Vic in 1957. An illustrious stage career followed in Franco Zeffirelli's Romeo and Juliet in 1960, in Cabaret in 1968 and as Lady Macbeth for Trevor Nunn in 1976. On TV she found huge success in sitcoms - appearing with her husband, the late Michael Williams, in A Fine Romance and with Geoffrey Palmer in As Time Goes By.

She received an Oscar nomination for her first big-screen part as Queen Victoria in Mrs Brown; Shakespeare in Love won her an Academy Award for Best Supporting Actress; Mrs Henderson Presents, Notes on a Scandal, Iris, and Philomena followed. She played the part of 'M' in the James Bond films seven times and is about to appear as Paulina in Sir Kenneth Branagh's production of Shakespeare's The Winter's Tale.

Married to Michael Williams for 30 years, their daughter, Finty, is also an actress.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is Dr Bill Frankland.

Frequently referred to as the "grandfather of allergy", his achievements include the introduction of the pollen count to the British public and the prediction of increased levels of allergy to penicillin.

Born in Cumbria in 1912, Dr Frankland turned 103 in March. He studied medicine at Oxford and worked at St Mary's hospital in Paddington, London, before war intervened. He signed up to the Royal Army Medical Corps (RAMC), but spent over three of the six years he spent in the army as a prisoner of war in Singapore.

After the war, he began work in the dermatology department at St Mary's, but quickly switched to allergy which became his passion. During the fifties he served as a registrar to Alexander Fleming who had discovered penicillin back in 1928. In 1954 he published a seminal research paper about a double-blind randomised trial proving that pre-season pollen injections greatly reduced the symptoms of hay fever sufferers.

He has treated high profile patients including Saddam Hussein and given evidence in court - possibly the oldest expert witness to do so. He continues to work in a private practice and has remarked, "I really don't know what people do when they retire at 65.".

Kirsty Young's castaway is the chef and restaurateur, Ruth Rogers.

Born in America, she has become one of the UK's most celebrated cooks. Despite not being a trained chef, she set up The River Café with her business partner, the late Rose Gray, in 1987. The focus was on high quality, seasonal produce cooked the Italian way. Many of today's top chefs including Jamie Oliver, Hugh Fearnley-Whittingstall, Theo Randall, Sam Clark and Allegra McEvedy began their careers in their kitchen. The café was awarded a Michelin star in 1997.

The youngest of three children, Ruth Rogers' parents were both immigrants and very political. In the late sixties, she left America and moved to London where she joined other Americans protesting against the Vietnam War. In 1969 she met the architect, Richard, now Lord, Rogers and they married in 1973. The couple moved to Paris when Richard Rogers and his partners won the contract to design the Pompidou Centre. There she learned the importance of seasonality: subsequent visits to Italy shifted her passion to Italian cooking.

Producer: Cathy Drysdale.