His unmistakable floral patterns – awash with willow, blackthorn and pimpernel – are now on everything from walking sticks to the seats submariners sit on. We go behind the scenes of a dazzling new show

He has papered our walls and carpeted our floors, enlivened our curtains, coats and cups, and even infiltrated Britain’s nuclear submarine fleet. Almost 130 years after his death, the Victorian arts and crafts designer William Morris has blanketed the world with his unmistakable brand of busy floral patterns, wrapping our lives with tasteful swathes of willow, blackthorn and pimpernel, peppered with cheeky strawberry-eating robins. There’s no escape.

“I started seeing Morris everywhere,” says Hadrian Garrard, director of the William Morris Gallery in Walthamstow, east London, speaking with the air of someone trying to shake off a stalker. “He’s on phonecases, umbrellas, walking sticks – and about a third of the Victoria and Albert Museum gift shop. I thought it was time that we addressed how we got here – how did William Morris, Britain’s greatest designer, go viral?”

The Smashing Pumpkins songwriter and guitarist on overdoing karaoke, joining Pink Floyd on stage and his secret love of Katy Perry’s Roar

The first single I bought
She Loves You by the Beatles, for 25 cents at a garage sale in Glendale Heights, Illinois, even though I didn’t know who the Beatles were. I just liked how they looked on the cover, their faces half in shadow.

The song that makes me cry
I’ve been lucky enough to play Wish You Were Here both when Pink Floyd were inducted in the Hall of Fame, and with Roger Waters at a benefit. It’s speaks to me in a way very few songs do. The pleasure of playing with them is hard to describe.

Clark Winter’s car photographs, taken during his travels around the globe, revel in nostalgia and reveal our strangely intimate relationships with our vehicles

The Submarine author employs that novel’s warmth and wit in his investigation into whether his great-grandfather knowingly helped to make chemical weapons for the Nazis

Joe Dunthorne tells us he originally envisaged this book as a story of his grandmother’s childhood escape from the Nazis; the reality turned out to be more complex. Narrated with the twists and turns of a detective story, Children of Radium is a family memoir that records the mazy path by which the prize-winning Welsh novelist discovered just how little he knew of his German Jewish heritage. His journey begins with “a foot-high block of A4”: a 2,000-page unpublished memoir by his great-grandfather, Siegfried, a Jewish scientist who worked at a secret chemical weapons laboratory near Berlin before he and his family left for Turkey – not the panicky flit Dunthorne imagined, but a relocation bankrolled by employers with plans for what he could yet do.

Hunches, tip-offs, false trails and dead ends abound in Dunthorne’s quest to determine how much Siegfried knew – and when – about his work’s murderous potential after he was reassigned in 1928 from toothpaste manufacture by his firm, a specialist in radioactive products. Siegfried’s memoir is circumspect, and the hunt for answers isn’t straightforward: not only was the site of Siegfried’s lab heavily bombed, but Dunthorne’s mum also chucked his papers into the recycling while clearing out her late mother’s flat.

An eye for that kind of comedy, honed in Dunthorne’s novels – the best known is Submarine (2008), filmed by Richard Ayoade – brightens a quixotic voyage into the heart of 20th-century darkness. The trail leads through libraries, museums and medical records, but also less obviously writer-friendly locales: in Germany, he wriggles belly-first into a fenced-off radioactive site in a clandestine hunt for soil to test for gas traces; and in Turkey, Dunthorne blags his way through military checkpoints in the company of a formerly jailed member of the Kurdistan Workers’ party, having learned that one of the letters he has from Siegfried might hold evidence of culpability for a massacre in an eastern mountain town prior to the second world war.

Arash Rakhsha’s documentary follows two Kurdish friends just about getting by smuggling goods across the mountains

In an immersive and sweeping debut feature, Kurdish film-maker Arash Rakhsha portrays the plight of his people with sheer cinematic poetry. Shot over six years, the film closely follows Hamid and Yasser, two Kurdish friends who work side by side as kolbars , smugglers of untaxed household goods across the Iran-Iraq border. Coloured in icy shades of blue, their lives are filled with terrifying dangers, yet there’s also space for warmth and camaraderie amid the fog of precariousness.

Getting paid per kilogram, the pair haul heavy loads on their backs through treacherous terrain. One moment they are wading upstream, the next they are hiking through the steep, snowbound ranges of the Zagros mountains. The kolbars also rely on mules for transport, though this means they are easier to detect by the border patrols. Landmines – active souvenirs from the Iran-Iraq war – are also hazards on the winding paths; every year, about 200 kolbars die en route.

Reunion tells an intriguingly layered story of redemption. Plus: Sam Mendes’ documentary about the cameramen who filmed the horrors of Belsen. Here’s what to watch this evening

9pm, BBC One
After serving time for the murder of his best friend, Ray, Daniel Brennan (Matthew Gurney) is having his pre-release interview. The officer is firing questions but there is silence – Daniel is deaf, and an interpreter hasn’t been booked. This means the officials quickly lose track of him, as he leaves prison to reunite with his estranged daughter Carly (Lara Peake) and embark on a mission of revenge and redemption. Meanwhile, Ray’s wife Christine (Anne-Marie Duff) is keeping Daniel’s release from daughter Miri (Rose Ayling-Ellis) and new boyfriend Stephen (Eddie Marsan). This intriguingly layered opener sets up an unravelling story about what really happened between Ray and Daniel. Hollie Richardson

Building society makes warning to fans desperate not to miss out as resale for Glastonbury festival approaches

One in four Britons say they have fallen victim to a ticket scam involving an in-demand event and lost £82 each on average, according to research issued ahead of the official Glastonbury festival ticket resale.

High demand and low availability, fuelled by “fomo” (fear of missing out), were creating a “perfect storm” for scammers, said Nationwide building society, which commissioned the analysis.

John Lithgow, Imelda Staunton, Romola Garai and Layton Williams are among the winners at the annual stage awards

• Olivier awards: full list of winners

The play Giant , which portrays children’s author Roald Dahl amid an outcry about his antisemitism, has triumphed at the Olivier awards on a star-studded night at the Royal Albert Hall in London.

US star John Lithgow took home the best actor prize for his performance as Dahl, Elliot Levey won best supporting actor (for playing publisher Tom Maschler) and Mark Rosenblatt received the award for best new play.

Nominees, presenters and guests arrive for London theatre’s big night out at the Royal Albert Hall