Emma Thompson has spoken about discovering her first husband, Kenneth Branagh, was having an affair with fellow actress Helena Bonham Carter.

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Emma Thompson Was ‘Humiliated’ By Husband’s Affair With Helena Bonham Carter

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Updated: 10:06 29 June 2026

Published: 09:24 29 June 2026


Emma Thompson has spoken candidly about the heartbreak of discovering her first husband, Kenneth Branagh, was having an affair with fellow actress Helena Bonham Carter.

She admitted the experience left her feeling ‘humiliated’ and questioning her own self-worth.

Today, all three stars are forever linked to the Harry Potter franchise, but years before they entered the Wizarding World, they were at the centre of one of Britain’s most talked-about celebrity love triangles.

The Harry Potter stars were linked long before Hogwarts

For many fans, Emma Thompson will always be remembered as Professor Sybill Trelawney, while Helena Bonham Carter became one of the franchise’s most iconic villains as Bellatrix Lestrange.

Kenneth Branagh also joined the wizarding universe, portraying the vain Defence Against the Dark Arts professor Gilderoy Lockhart in Harry Potter and the Chamber of Secrets.

But years before any of them picked up a wand, Thompson and Branagh were considered one of Britain’s biggest acting power couples.

The pair met while filming the BBC series Fortunes of War in 1987 before marrying in 1989.

Throughout the early 1990s they frequently worked together, starring in films including Henry V, Dead Again, Peter’s Friends and Much Ado About Nothing.

The marriage appeared solid from the outside.

Behind the scenes, however, it was falling apart.

Branagh reportedly began a relationship with Helena Bonham Carter while the pair were filming Mary Shelley’s Frankenstein in 1994.

The affair ultimately led to Thompson and Branagh separating in 1995, with their divorce being finalized two years later.

Branagh and Bonham Carter remained together until 1999.

Emma Thompson says she was ‘utterly blind’

Looking back on the breakdown of her marriage decades later, Thompson admitted she never saw it coming.

Speaking to The New Yorker, the Oscar-winning actress revealed that Bonham Carter wasn’t the only woman Branagh had relationships with during their marriage.

“I was utterly, utterly blind to the fact that he had relationships with other women on set,” she said. “What I learned was how easy it is to be blinded by your own desire to deceive yourself.”

The emotional impact was devastating.

“I was half alive,” Thompson admitted. “Any sense of being a lovable or worthy person had gone completely.”

Years later, she also reflected on how humiliating the affair had felt, explaining that discovering the betrayal forced her to completely rebuild her confidence.

Her comments offered one of the most candid insights yet into the emotional aftermath of one of Hollywood’s most famous affairs.

Emma Thompson
Emma Thompson has spoken candidly about the heartbreak of discovering her first husband, Kenneth Branagh, was having an affair with fellow actress Helena Bonham Carter. Credit: Universal Pictures

Greg Wise helped her rebuild her life

Not long after her marriage ended, Thompson met actor Greg Wise while filming Sense and Sensibility in 1995.

The pair married in 2003 and have remained together ever since.

Looking back, Thompson has often credited Wise with helping her recover after the collapse of her first marriage.

“He picked up the pieces and put them together again,” she previously told The Observer.

She has also described how much healthier her second marriage has been.

“I’ve learned more from my second marriage just by being married,” she said, adding with a smile: “As my mother says, ‘The first twenty years are the hardest.'”

Thompson has previously explained that the heartbreak even informed one of her most famous performances.

Fans have long connected her emotional scene in Love Actually—where Karen quietly cries alone in her bedroom after realizing her husband has been unfaithful—to her own experience of betrayal.

The actress later admitted she knew exactly what those emotions felt like because she had lived through them herself.

She and Helena Bonham Carter eventually made peace

Despite the painful history, Thompson has made clear that she no longer carries any resentment.

Speaking to The Telegraph, she explained that she and Bonham Carter buried the hatchet years ago.

“I’ve had so much bloody practice at crying in a bedroom, then having to go out and be cheerful, gathering up the pieces of my heart and putting them in a drawer,” she said.

“That is… all blood under the bridge. You can’t hold on to anything like that. It’s pointless.”

She added: “I haven’t got the energy for it. Helena and I made our peace years and years ago… she’s a wonderful woman.”

More recently, the story unexpectedly resurfaced when Thompson and Wise’s daughter, Gaia Wise, shared an old photo of her mother with Branagh on Instagram and jokingly captioned it: “She’s everything, he’s just Ken” – a playful nod to the Barbie movie that quickly went viral.

Today, Thompson appears to view the affair as a painful chapter that ultimately led her to a happier life.

Rather than dwelling on the past, she has chosen forgiveness, describing everything that happened as simply ‘blood under the bridge.’

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