Kirsty's castaway this week is the conductor and composer Harry Rabinowitz.

His list of credits and collaborations read like a Who's Who of 20th century music - Gracie Fields, Charles Aznavour, Andrew Lloyd Webber, Matt Monro & Barbra Streisand are only a handful of the stellar names who've benefitted from his talents. He's conducted a lot of movie scores too, including Chariots of Fire and The Talented Mr Ripley; indeed the late director Anthony Minghella described him as "the UK's best kept secret".

It wasn't an illustrious start; his first job was playing sheet music for prospective customers in a Johannesburg department store - he was fired after 6 weeks. His first go at conducting was enhanced not by an elegant baton of the finest Maplewood but a rolled up old newspaper.

He's almost a hundred years old now, still plays the piano every day and only retired from the concert platform six years ago at the age of 94.

Producer: Sarah Taylor.

Kirsty Young's castaway this week is Stephen Fry.

Comedian, actor, writer, director, presenter & award-ceremony host - his list of accomplishments is long, varied and impressive. His younger years were troubled and with a propensity for stealing and lying, he was expelled from two schools and imprisoned for credit card fraud. The turning point came when he knuckled down and won a scholarship to Queens' College, Cambridge, where he read English and joined the Cambridge Footlights, becoming lifelong friends with Emma Thompson and Hugh Laurie.

His career highlights include the fruits of his collaborative work with Laurie - from A Bit of Fry and Laurie to Jeeves and Wooster, he played Lord Melchett in Blackadder and Oscar Wilde on the big screen. He is a best-selling author of fiction and three volumes of autobiography, is the voice of the Harry Potter audio books and presents BBC Two's QI. He has also spoken of his experience of mental health issues and in 2006 he made a documentary exploring the effects of living with Bipolar - it won an Emmy Award.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is Rebecca Adlington - Britain's most successful female swimmer.

A multiple medal winner and record breaker she's packed a lot in at a young age, first grabbing the nation's attention by winning two golds at the Beijing Olympics and breaking a world record into the bargain. When she got back home she was granted the Freedom of Mansfield and the Mayor gave her a pair of golden shoes. The Queen opted for the more conventional approach, bestowing an OBE.

She went on to win two more medals at the London 2012 Olympics and when all the cheering and flag waving had died down and the games were over she announced her retirement. She's hardly been a slouch since - appearing regularly on TV, getting married and in recent months getting ready for the birth of her first child, a daughter, who was born Monday 8, June, 2015. She's only 26.

One of three sisters, family life was dominated by early morning training session at the local pool and it wasn't long before little Becky was out of the shallow end and heading for the fast lane ... The Sherwood Baths are now renamed The Rebecca Adlington Swimming Centre.

Producer: Sarah Taylor.

Professor Lisa Jardine, academic, biographer and public thinker, is interviewed by Kirsty Young for Desert Island Discs.

Historian, biographer, public thinker, mathematician - her proclivities are wide ranging and well regarded with prize winning books on subjects as diverse as Sir Christopher Wren, Seventeenth century Holland, Erasmus and women in the time of Shakespeare.

Her current day job is leading the Department of Renaissance Studies at University College London, she's also a prolific writer and broadcaster. If that all seems a little ivory tower for your tastes think again; as Chair of the Human Fertilisation and Embryology Authority for many years she was at the sharp end of the complex conundrums and high emotion that surround the artificial creation of life, leading the world in developing the legal framework that governs IVF treatment.

Her rigour and originality, then, are greatly admired and both seem to have been in evidence since the beginning - her schoolgirl contemporaries had pictures of Elvis by their beds. Lisa had other ideas, as a teenager she gazed lovingly at a photo of a brilliant mathematician.

She says: "I only do things I love, and I love everything I do ..."

Producer: Sarah Taylor.

Kirsty Young's castaway is Pamela Rose.

Now aged 97, she was a Bletchley Girl who spent her war years working in total secrecy, painstakingly indexing snippets of information that would prove vital to the the war effort. Alan Turing and his fellow cryptanalysts would eventually break the Enigma Code and it's said that this breakthrough shortened the war by two years.

Born into a musical family, she first took to the stage at boarding school. Pamela's lifelong ambition to be an actress was interrupted by the war and the invitation to work at Bletchley. Despite finding the work in the indexing section of Hut 4 something of a disappointment at first, she and her fellow workers still managed to have fun and she met her husband Jim at a hop when he asked her to dance. They married after the war and it wasn't until nearly sixty years later and after Jim's death that she would finally achieve her dream of acting on the West End stage.

Producer: Cathy Drysdale.

Kirsty Young's castaway is the internet entrepreneur Jimmy Wales.

He is best known as the co-founder of the free online encyclopedia Wikipedia. He grew up in Huntsville, Alabama and was the eldest child of a grocery store manager and his wife who ran a primary school where Jimmy and his siblings were educated. After acquiring a degree in finance and working as a trader in Chicago, his first serious foray into the online world was with the web portal Bomis, before branching out with a project called Nupedia, an online encyclopedia with entries written by scholars and published after undergoing peer review.

Wikipedia launched in 2001 and now exists in 287 languages and is the 7th most accessed website in the world with over 20 billion page views per month. It can be edited by anyone though relies on a core of around 5,000 volunteers who are responsible for the majority of the content. It is Jimmy's aim to create "a world in which every single person on the planet is given free access to the sum of all human knowledge."

Producer: Cathy Drysdale.

Kirsty Young's castaway is the farmer, and Chief Executive of the Soil Association, Helen Browning.

Born and brought up on the farm in Wiltshire she runs today, she told her father she wanted to be a 'proper farmer' aged just 9. By the time she was 24 her father had passed the reins on to her and not long after, she made it entirely organic.

Inspired by five of her great aunts who, after the First World War, began farming themselves, today she continues to run the family farm, her own meat business and the local pub. Awarded the OBE in 1998 for services to farming, she is chair of the Food Ethics Council, has served on the Curry Commission into the Future of Farming and Food and was appointed Chief Executive of the Soil Association in 2010.

Producer: Cathy Drysdale.

Kirsty Young's castaway is the cyclist Sir Bradley Wiggins.

Winner of four Olympic gold medals, six track World Championship gold medals and the first Briton to win the Tour de France, cycling is in his blood. His parents met through the sport - his Australian father was himself a professional, his British mother a keen follower. His father left the family when Bradley was still a toddler and it was his mum, Linda, who helped him pursue his dreams of being a champion cyclist. Inspired by Chris Boardman's success at the 1992 Barcelona Olympics by the age of 16 he'd won gold, silver and bronze at the Junior National Track Championships and was called up to the National Squad. He was Junior World Champion at 18.

Knighted following his achievements in 2012, he's soon to attempt the world record for the furthest distance cycled in an hour and plans to return to the track in the Team Pursuit at the 2016 Olympics in Rio de Janeiro.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is Paul Hollywood.

One of the UK's leading artisan bakers, he's a judge, together with Mary Berry, on BBC One's the Great British Bake Off. The programme enjoyed viewing figures of 15.6m for the 2014 final and has won two BAFTAS.

Born and brought up in Wallasey in the Wirral, Paul studied sculpture at art school before joining his father's bakery business. He went on to work at the Chester Grosvenor, Cliveden and was head baker at The Dorchester. Following his success at some of the UK's top hotels, he travelled extensively through Cyprus, Egypt and Jordan discovering ancient techniques for baking bread. It was in Cyprus that he first appeared on camera. On his return to the UK he began his TV career co-presenting two series with the chef James Martin.

Paul has judged five series of The Great British Bake Off and celebrity versions for Sport Relief and Comic Relief - all alongside Mary Berry. He has published several best-selling books on baking and is a regular contributor to food magazines and writes a column for The Daily Telegraph.

Producer: Cathy Drysdale.

Kirsty Young's castaway this week is the designer Pat Albeck.

Born in Hull, Pat went to art school there when she was 16. In 1950, she earned a place at The Royal College of Art to study textile design and moved to London. As Britain emerged from the austerity of the war years, Pat began her career designing bold and exciting fabrics for the fashionable dress design company of the time, Horrocks. In the 60 years that have followed, her designs have graced pottery, paper, furnishing fabrics as well as over 300 tea towels - a record which has brought her the unofficial title 'Queen of the Tea Towel'.

Producer: Isabel Sargent.