Russell Brand, comedian & actor, is interviewed by Kirsty Young for Desert Island Discs.

Actor, comic, writer, Russell Brand is a compelling cultural phenomenon who in 2006 was, in his own words, "plucked from a life of hard drugs and petty crime and rocketed into the snugly carcinogenic glare of celebrity."

Along with an athletic wit and a florid turn of phrase he specialises in going too far - reckless acts of self-destruction and a degree of chaos seem to be his companions along life's winding path. It's been five years since he rocked the foundations of the BBC with what became known as the Ross Brand scandal. He's since gone on to international success with a movie career, best-selling books and all the trappings of life on the "A" list.

His most recent notable appearances have included testifying to a Parliamentary Select Committee on the importance of funding for drugs rehabilitation programmes and an appearance as a panellist on Question Time.

Producer: Cathy Drysdale.

The writer, Val McDermid, is interviewed by Kirsty Young for Desert Island Discs.

Crime fiction is Val's chosen genre and the millions of novels she sells examine and dissect the darkest recesses of human behaviour. Domestic violence, murder, abduction - it's difficult to imagine a subject she'd shy away from. She once described herself as "A mixture of hard bitten cynical hack and Pollyanna".

Brought up in a secure home by parents who were very happily married, she was the first Scot from a state school to win a place at St Hilda's college, Oxford. She was just 16. After graduation she chose tabloid journalism as her trade and by all accounts fitted right in with the hard working, bolshy, boozing culture at the time.

She says "I think there are three elements to any literary career. You have to have a modicum of talent, you've got to work hard . and you've got to be lucky."

Producer: Isabel Sargent.

Kirsty Young's castaway this week is the cardiologist Jane Somerville.

Now an Emeritus Professor in her discipline at Imperial College London she's gained a worldwide reputation for her pioneering work on congenital heart disease.

She began studying medicine in the early 1950s when only a very few women were admitted through the doors of medical school. Since then she's been responsible for ground-breaking advances in cardiovascular treatment and founded the World Congress of Paediatric Cardiology.

She had something of a role model in her mother, a hard-working, clever, successful woman too. Her early years as a pupil at a boys' school in Wales must also have prepared her for making her way in such a heavily male-dominated profession.

She has a reputation for being straight-talking, and her late husband used to urge her to be more "prudent", but, she says, "it wasn't fun to be prudent: it was much more fun to be mafioso and naughty."

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is cognitive psychologist Steven Pinker.

An author and Harvard professor he's been named by Time Magazine as one of the world's 100 most influential scientists and thinkers.

The psychology of violence and where language comes from are just two of his specialist subjects. Bill Gates is officially a fan, the man who sends him hate mail related to his work on irregular verbs is not. It would seem that whenever he publishes yet another best-selling book controversy is never far behind - his recent contention that we live in an "unusually peaceful time" drew opprobrium from many quarters.

Born and brought up in Montreal his parents encouraged vigorous debate around the dinner table - indeed it was his mother's interest in the psychology of language and linguistics that sparked his own.

He says "I appreciate what my parents did for me beyond words. Not in making me what I am, but in my view of what's important in life, what I think about and cherish."

Producer: Cathy Drysdale.

Kirsty Young's castaway is the actor, Hugh Laurie.

If life were straightforward he'd be marooned on the island because of his achievements as an Olympic rower. But his early promise on the water was scuppered by a bout of glandular fever - so he's had to make do instead with life as a worldwide entertainment superstar.

Very British comedy, very big budget movies, very successful syndicated TV drama - his 30 year career has taken him from A Little Bit of Fry & Laurie to a big bit of broadcasting history: his role in the U.S. show House ran for 8 series and had a global audience of 81 million. So why now does he feel the need to risk his stellar reputation by making music too?

He says, "as soon as I acknowledge to myself that something is frightening and carries the risk of public humiliation I feel like I have to do it."

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the editor of British Vogue, Alexandra Shulman.

In spite of being in charge of one of our leading 'style bibles' for more than 20 years, her reputation is that of someone rather down to earth. She thinks designers cut clothes too small, refuses to let superstars have photo and copy approval and when she was first appointed editor, she'd never even been on a fashion shoot. During her tenure Vogue's circulation has increased.

Her first job as editor was with the men's magazine GQ and she's had spells at Tatler, the Sunday Telegraph and writing a weekly column for the Daily Mail.

She says, "Vogue is not my personal taste, really. I think of it more as a kind of newspaper, reporting on what's out there."

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the mountaineer Conrad Anker.

Some of us choose a life in I.T. or event planning - Conrad Anker has opted to swing from a nylon stepladder 19,000 feet up a cliff with a dose of trench foot and a wedge of stale cheese for supper. It may seem an odd way to spend one's life but it's his way.

One of the world's elite climbers he's credited with a long list of first time ascents. He's also summited Everest three times. During one renowned climb he discovered the icy corpse of the legendary George Mallory who had perished along with Sandy Irvine as they tried to scale the peak - in nothing more than hobnail boots and tweeds - in 1924.

When he isn't exploring the far corners of the world's wilderness he's at home in Montana with his wife Jennifer, the widow of his best friend Alex Lowe, who was killed by an avalanche that narrowly missed Conrad himself.

He says of his life, "Most people are so risk averse. The world is full of couch potatoes ... we climbers should get government stipends for keeping the risk-taking gene pool alive."

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the out-going Governor of the Bank of England, Sir Mervyn King.

He has been in charge during a period of unprecedented global financial turmoil yet under his leadership the Bank of England has emerged as one of the world's most powerful central banks. He may have grown used to the pink tails coats and top hats of his attendants in Threadneedle Street but his background was far from privileged. His father worked on the railways and then became a teacher; his mother was a housewife and sang in the church choir. Their son studied hard and gained a top first at Cambridge before going on to teach at MIT and the London School of Economics.

Throughout his demanding public life he has been sustained by his twin passions for cricket and Aston Villa football club. His other great love appears to have been an intriguingly slow burn: he first met Barbara, the woman who would become his wife, in 1970 - they married in 2007.

He says, "Being the Governor of the Bank of England is actually the easiest job I've ever done; you're in charge & you've got tremendous support."

Producer: Cathy Drysdale.

Kirsty Young's guest this week is the ballerina, writer and broadcaster Deborah Bull.

The Royal Ballet, where she was a principal dancer for almost two decades owes a debt of gratitude to the Janice Sutton School of Dance in Skegness. It was there, aged 7, two floors above a fish and chip shop and a row of amusements arcades - and having practiced "good toes, bad toes" - that she knew precisely what she wanted to do with her life.

After many years of success at the top of her profession, she said goodbye to her childhood dream and jetéd into her life's next act - for a time serving as Creative Director of The Royal Opera House and more recently working far beyond Covent Garden promoting creativity and cultural partnerships across Britain.

She says "I always thought I'd feel a passionate sense of loss when I stopped dancing. What was absolutely wonderful was, as the volume turned up on the new career, the volume turned down on the old one."

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the Pulitzer Prize winning writer Alice Walker.

Author, poet, feminist and activist, it was her novel The Color Purple that brought her worldwide attention and acclaim. The story of a poor black girl surviving in the deep American south, between the wars, it is a landmark work, disturbing and exhilarating in equal measure.

If one subscribes to the idea that "art is a wound turned to light", then Alice Walker's early life proved crucial to her future creations. Shot and blinded in one eye by her brother's BB gun it was through the isolation of her injury that she began to write. She once described poetry as "medicine".

She has also said, "I know the world's a mess, but there's so much that's gorgeous in it. I wish everybody could have what I have."

Producer: Cathy Drysdale.