On Start the Week Amol Rajan considers the making of the British landscape and an island mentality. The President of the Royal Geographical Society Nicholas Crane looks back over the last 12 millennia to understand how we have shaped our habitat but also how the landscape has shaped our lives. Madeleine Bunting travels through the Hebrides to see what the furthest reaches of these isles can tell us about the country as a whole. David Olusoga re-tells the story of the relationship between Britain and the people of Africa, which reaches back to the Romans, to demonstrate how black history has shaped our world, and the poet Imtiaz Dharker reflects on displacement and belonging.

On Start the Week Andrew Marr hears stories of virtue and vice. Lucy Bailey is directing Milton's Comus, a masque in honour of chastity, in which a Lady, lost in the woods, is tempted by pleasure. In Berg's opera Lulu the eponymous heroine appears to be the epitome of seductive pleasure, an amoral seductress, but William Kentridge's production questions how much she is the real victim. The academic Simon Goldhill charts the transition from the high Victorian period into modernity through one family's relationship with sex, psychoanalysis and religion, while the very modern preoccupation with therapy is laid bare, as Susie Orbach reveals what happens behind the therapist's door.

Producer: Katy Hickman.

On Start the Week Andrew Marr talks to the writer Alan Bennett about his life and work. As he publishes his third and, he says, final selection of his diaries, Keeping On Keeping On, Bennett reflects on his reputation for tweeness, his radical politics and sexuality. He writes, "Nothing is ever quite so bad that one can't write it down or so shameful either, though this took me a long time to learn with my earliest diaries reticent and even prudish."

On Start the Week Andrew Marr looks at winners and losers - from microbes and genes, to athletes and adventurers. Ed Yong seeks to expand our understanding of microscopic microbes which inhabit every corner of the earth, and influence our bodies more than we know. Each person's DNA is unique but Adam Rutherford reveals how collectively it tells the story of the history of our species - the successes and the failures. When one's own genetic make-up and hard work aren't enough, there's always chemical enhancement - Jonathan Maitland looks at doping in sport for his latest play, Deny, Deny, Deny. The polar scientist Felicity Aston was the world's first woman to ski alone across the Antarctic and knows what it's like to push your body to the limits. She's now off to Canada's frozen North in search of gold.

On Start the Week Tom Sutcliffe talks to the former Chief of the General Staff Richard Dannatt about the history of the British Army, its role in present conflicts and relations with NATO. The writer Ben Macintyre reveals the wartime antics of one of the most secret regiments, the SAS and the historian Catherine Merridale recreates Lenin's journey across Europe in the midst of the Great War. John Lough was NATO's first representative based in Moscow and explores the tensions on Russia's borders.

Producer: Katy Hickman.

In a special edition of Start the Week Andrew Marr is at the Bluecoat Gallery in Liverpool. He's joined by the writer Phil Redmond, historian John Belchem and journalists Gary Younge and Kajsa Norman to discuss historical myth-making, segregation and assimilation - from Liverpool's radical past, to the US and its obsession with guns and race, to the Transvaal and the survival tactics of the Afrikaner community. With the Labour party conference in full swing in Liverpool Andrew Marr will also be discussing how far people will go to retain their cultural identity and what happens when splits appear.

On Start the Week Andrew Marr talks to the MP Margaret Hodge who challenged multinational companies to explain their tax affairs and shone a light on the billions wasted by government every year. The former Chair of the Public Accounts Committee argues that it's time Ministers and Civil Servants learnt from their mistakes. Sir John Armitt masterminded the successful delivery of the 2012 London Olympics and explains why big projects are notorious for budget overspends. MPs will have to decide soon on a multi-billion pound proposal to renovate the Palace of Westminster which would involve them moving out for several years: the political journalist Philip Webster reflects on working in the House of Commons for four decades and how the building influences the business of politics. The best-selling novels of Robert Harris reveal the machinations behind the closed doors of those in power, or seeking it - from Ancient Rome to New Labour. His latest book centres on the intrigue in the corridors of the world's smallest state, the Vatican, as they vote for the next Pope.

On Start the Week Andrew discusses love, loss and scandal. Carrie Cracknell is directing Rattigan's The Deep Blue Sea, the story of an overpowering, self-destructive love affair set in post-war Britain. Michel Faber's collection of poetry explores the loss and grief at the death of his beloved wife, Eva. AE Housman wrote a series of poems at the end of the 19th century - A Shropshire Lad - which were hugely popular and came to encapsulate the nostalgia for an unspoilt pastoral idyll, but the writer Peter Parker says they're also shot through with unfulfilled longing for a young man. Homosexuality only became legal in the late 1960s and John Preston retells the story of the MP Jeremy Thorpe - a tale of sex, lies, murder and scandal at the heart of the establishment.

On Start the Week Andrew Marr explores food and politics. Churchill charged Lord Woolton with the daunting task of feeding Britain during WW2. The food writer William Sitwell looks at the black markets and shop raids Woolton had to battle as the country teetered on the edge of anarchy. Economist Jane Harrigan argues that it was rising food prices that sowed the seeds for the Arab Spring Uprisings, and food historian Bee Wilson asks what governments can do now to control what we eat.

Producer: Hannah Sander.

On Start the Week Tom Sutcliffe asks if one day we might know everything. The mathematician Marcus du Sautoy and the physicist Roger Penrose explore the far reaches of knowledge, questioning whether certain fields of research will always lie beyond human comprehension. They ask how much fashion and faith shape scientific theories. The experimental physicist Suzie Sheehy attempts to build machines to test the latest theories, while Joanna Kavenna plays with a philosophical Theory of Everything in her latest novel A Field Guide to Reality.