Mia Threapleton is a British actress. Best known for playing Honoria Marable in The Buccaneers and Liesl in The Phoenician Scheme. Born in October 2000 in London, daughter of Kate Winslet and filmmaker Jim Threapleton, but here’s the thing – she hasn’t really coasted on that name. It’s been a slow build. Small parts first, then bigger ones, year after year, and 2026? This is turning into her biggest one yet, the kind of year where all that groundwork finally starts showing.
- Best known for Honoria Marable in The Buccaneers and Liesl in The Phoenician Scheme
- Broke out properly opposite Benicio del Toro in Wes Anderson’s world
- Just wrapped Damien Chazelle’s untitled prison drama alongside Daniel Craig and Cillian Murphy
- Set to return for The Buccaneers season three
- Doesn’t use social media, by choice
Who Is Mia Threapleton?
Depends who you ask, honestly. Casting directors would say English actress, steady rise, the kind who picks projects slowly instead of grabbing whatever’s offered. Her mum’s Kate Winslet. Her dad is Jim Threapleton, who left film behind years ago and became a painter, which is its own strange story if you want to go read it. But Mia’s path started nowhere near glamorous.
A single uncredited scene in A Little Chaos 2014, nobody would’ve clocked her in it. Shadows came after. Then Dangerous Liaisons. Then The Buccaneers. Not a straight line up, more like she kept showing up until 2025 finally cracked things open for her. She’s said in interviews she’d rather the work carry her than the surname. Fair enough, and going by what she’s actually chosen to be in, she seems to mean it.
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The Roles That Actually Define Her
Two roles, mainly. Honoria Marable in Apple TV+’s The Buccaneers, a part she’s held since the show began, and Liesl in Wes Anderson’s The Phoenician Scheme opposite Benicio del Toro, the role that really put her name on the map critically in 2025. Honoria’s been a slow-burn character too, tangled up in a covert relationship with Mabel Elmsworth across the series, one of the more quietly compelling threads in a show that’s mostly known for its bigger, louder storylines. Playing something subtler like that for two seasons running, rather than jumping to a flashier part, says something about the kind of actress she’s shaping up to be.
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No Fast Track, Just Small Parts First
A Little Chaos, 2014. Blink, and you’d miss her. Thirteen years old, no lines, barely a credit worth mentioning. That’s genuinely how it started, no fast track, no lead role handed over because of who her mum is. She just kept showing up to smaller stuff. Shadows in 2020 finally gave her something real to work with – an Italian thriller, proper lead this time.
Then Dangerous Liaisons. Then The Buccaneers. Somewhere in between all that, in 2022, she ended up sharing a scene with her actual mother in “I Am Ruth,” part of the I Am… anthology, one of maybe a handful of times they’ve been on camera together. And honestly, none of these early credits read like someone coasting on a surname. They’re the unglamorous, low-visibility parts actors take when they’re genuinely trying to learn the job, not chase attention.
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The Year Mia Threapleton Stopped Being “Kate Winslet’s Daughter” First
Something shifted in 2025. Before that, most write-ups couldn’t help themselves, always some line about “Kate Winslet’s daughter” before you even got to her name. Then the Phoenician Scheme happened. She played Liesl opposite Benicio del Toro, Wes Anderson directing, and it just landed differently. Critics actually paid attention to her, not the family connection. The film premiered at Cannes in May 2025 to strong reviews, and it’s since gone on to earn a solid score with both critics and audiences on Rotten Tomatoes, a rare combination for an ensemble Anderson picture.
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Greece, Prison Walls and a Cast Full of Heavyweights
She just wrapped filming on Damien Chazelle’s untitled prison drama alongside Daniel Craig, Cillian Murphy, and Michelle Williams. Shot largely in Athens, the film is set in the 1940s and follows a prison warden, played by Craig, locked in a psychological standoff with a defiant inmate, played by Murphy. Threapleton plays the inmate’s girlfriend, a smaller but pivotal role in a cast stacked with heavyweight names. It’s in post-production now, with talk of a possible 2027 premiere. She’s also expected back as Honoria Marable when The Buccaneers returns for season three, which began filming in early 2026 across Scotland and Slovakia.
Is Mia Threapleton on Social Media?
No. Never has been, really. She’s said flat out it wouldn’t add anything to her life, and unlike most people who say that and quietly cave a year later, she’s actually held to it, even with her profile blowing up the way it has recently. Bit unusual, that. Most actresses her age, especially ones on the way up, get pushed hard toward building some kind of online presence – it’s basically expected at this point. She just didn’t. Seems less like a phase and more like she genuinely meant it.
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The Roles So Far
| Year | Title | Role | Type |
| 2014 | A Little Chaos | Uncredited | Film |
| 2020 | Shadows | Alma | Film |
| 2022 | Dangerous Liaisons | Rose | TV Series |
| 2022 | I Am… (“I Am Ruth”) | Freya | TV Episode |
| 2023–present | The Buccaneers | Honoria Marable | TV Series |
| 2025 | The Phoenician Scheme | Liesl | Film |
| TBA | Untitled Damien Chazelle film | Inmate’s girlfriend | Film |
FAQs
How old is Mia Threapleton?
Turns 26 come October. Born in October 2000.
Is she actually Kate Winslet’s daughter?
Yep, real one, from Winslet’s first marriage to Jim Threapleton.
What’s she most known for right now?
Honoria Marable on The Buccaneers, and Liesl in The Phoenician Scheme.
Does she use Instagram or any social media?
No. Said openly she doesn’t think it’d add anything to her life.
What’s next for Mia Threapleton?
She just wrapped Damien Chazelle’s prison drama, reportedly titled “Sacrifice,” alongside Daniel Craig, Cillian Murphy and Michelle Williams. It’s in post-production now.
Will Mia Threapleton be in The Buccaneers season 3?
Yes, she’s expected to return as Honoria Marable when the new season airs.
Who is Mia Threapleton’s father?
Jim Threapleton, a former film assistant director who later reinvented himself as a painter. More on his story here.
Did The Phoenician Scheme premiere at Cannes?
Yes, it premiered there in May 2025 to strong reviews before its wider release.
