The Other One Cast – Full List of Actors and Characters
The BBC sitcom The Other One revolves around two women who share the same name and discover they are half-sisters only after their father dies unexpectedly. The comedy, created by Holly Walsh, aired from 2017 to 2022 across three series. Here is a full breakdown of the cast, the characters they play, and what is known about each season.
The show’s central premise – two Catherines, one conventional and one chaotic, thrown together by a family secret – attracted a strong ensemble of British comedy actors. Ellie White and Lauren Socha lead the cast as the half-sisters, while Rebecca Front and Siobhan Finneran play the widow and the mistress. The series also features a rotating group of supporting characters that flesh out the Walcott family and their tangled relationships.
Because the series has now concluded, the cast is well documented across official sources such as the BBC, IMDb, Wikipedia, and RadioTimes. Below we answer the most common questions about who appears in each season, including the elusive character known as Kitty.
Who Is in the Cast of The Other One?
Ellie White
Catherine “Cathy” Walcott
The more conventional half-sister, thrown into chaos after her father’s death.
Lauren Socha
Catherine “Cat” Walcott
The younger half-sister, unaware of Cathy’s existence until the funeral.
Rebecca Front
Tess Walcott
Cathy’s mother and Colin’s widow.
Siobhan Finneran
Marilyn
Colin’s long-term mistress and Cat’s mother.
Amit Shah
Marcus Tandell
Cathy’s ex-fiancé.
Christopher Jeffers
Callum
Appears in Series 2.
- The series features a unique premise: two half-sisters unaware of each other until their father’s death.
- Ellie White is known for her role in The Windsors; Lauren Socha gained fame on Misfits.
- The show spans three series (pilot in 2017, Series 1 in 2020, Series 2 in 2022) on BBC One.
- Rebecca Front and Siobhan Finneran bring decades of sitcom experience, having appeared in The Thick of It and Benidorm respectively.
- No official confirmation of a fourth series exists; the story is considered concluded as of 2022.
| Actor | Character | Role | Seasons |
|---|---|---|---|
| Ellie White | Catherine “Cathy” Walcott | Lead | 1–3 |
| Lauren Socha | Catherine “Cat” Walcott | Lead | 1–3 |
| Rebecca Front | Tess Walcott | Lead | 1–3 |
| Siobhan Finneran | Marilyn | Lead | 1–3 |
| Amit Shah | Marcus Tandell | Supporting | 1–3 |
| Simon Greenall | Colin Walcott | Guest (flashback) | 1 |
| Caroline Quentin | Auntie Dawn | Recurring | 1–2 |
| Christopher Jeffers | Callum | Recurring | 2 |
| Lolly Adefope | Pretty Cathy | Guest | 2 |
| Stephen Tompkinson | Mr Shipham | Guest | 1 |
| Michele Austin | Angela | Guest | 2 |
| Jag Sanghera | Mussa | Guest | 1 |
Who Plays Kitty in The Other One?
The character name “Kitty” does not belong to a major role in the series. A search of official cast listings from the BBC One programme page, Wikipedia, and IMDb does not list any credited actor for a “Kitty”. Some viewers may confuse the name with “Cat” (Lauren Socha’s character), or it could refer to a minor unnamed guest role in a single episode. The exact nature of Kitty remains unconfirmed by available sources.
What Character Does Ellie White Play?
Ellie White plays Cathy Walcott, the elder of the two half-sisters. Cathy is a more uptight, organised person whose world is turned upside down by the revelation of her father’s secret family. White’s performance anchors the show’s emotional core.
Is Kitty a Main Character?
No. All main cast members are accounted for in the primary quartet of Cathy, Cat, Tess, and Marilyn. If Kitty appears, it would be a minor background character; no episode synopsis or cast list mentions her by name.
The name “Kitty” is absent from the BBC, IMDb, and British Comedy Guide cast lists. It may be a viewer misinterpretation of “Cat” or a guest role that went uncredited. No verified source links Kitty to a specific actor.
What Is the Cast of The Other One Season 1?
The first series (including the pilot) introduced the core family and the central conflict. All four leads – White, Socha, Front, and Finneran – appeared from the beginning. The pilot, which aired on 13 September 2017, established the premise at a surprise birthday party where the father collapses and dies.
Who Joined the Cast in Season 2?
Series 2, which aired in 2022, added several new characters. Christopher Jeffers appeared as Callum, a new friend or love interest (exact role details are limited). Michele Austin played Callum’s mother, Angela. Lolly Adefope made a guest appearance as “Pretty Cathy”, a former schoolmate of Cathy’s. The RadioTimes cast article from May 2022 profiles these additions.
Who Left the Cast After Season 1?
The show had a relatively stable main ensemble. No lead actors left between series. Some guest characters, such as the real estate agent played by Sarah Kendall, appeared only in Series 1. Similarly, Stephen Tompkinson’s Mr Shipham was a one-off role.
While some sources refer to two series (pilot + 2 series), the BBC officially airs the programme as three series: the pilot (2017), Series 1 (2020), and Series 2 (2022). The British Comedy Guide lists 12 episodes in total.
Is There a Season 4 Cast for The Other One?
As of early 2025, no fourth series has been announced or produced. The story concluded with Series 2 in 2022. Fans occasionally speculate about a special episode or revival, but no official plans exist. The actors have moved on to other projects – Ellie White, for example, appears in The Crown and other BBC dramas.
Any discussion of a season 4 cast is purely speculative. The show’s creator Holly Walsh has not indicated interest in continuing the story, and the BBC has not listed it for renewal.
When Were the Seasons of The Other One Aired?
- 2017 – Pilot episode premieres on BBC One (13 September). Introduces Cathy and Cat.
- 2020 – Series 1 airs. Episode 1: “Ashes to Ashes”. The plot begins with the father’s death and the sisters learning about each other.
- 2022 – Series 2 airs. The story deepens the relationship between Cathy and Cat and includes new supporting characters. No further seasons have been released.
- May 2022 – RadioTimes publishes a comprehensive main cast article covering the entire run.
What Is Known and Unknown About The Other One Cast?
| Established information | Information that remains unclear |
|---|---|
| Main cast for all three series: Ellie White, Lauren Socha, Rebecca Front, Siobhan Finneran, Amit Shah, Christopher Jeffers | Exact role of Christopher Jeffers (character name “Callum” appears in Series 2, but full details are sparse) |
| Series created by Holly Walsh; BBC One broadcast | Existence of a character named “Kitty” – no credible source confirms her |
| 12 episodes total (pilot + 2 series) | Any plans for a fourth series or a revival |
What Is The Other One About and Why Is It Notable?
The series centres on two women – both named Catherine Walcott – who only learn of each other after their shared father, Colin, dies at his own surprise party. Cathy (Ellie White) is the legitimate daughter; Cat (Lauren Socha) is the daughter from Colin’s long-term affair with Marilyn (Siobhan Finneran). The comedy arises from the clash of personalities, the awkwardness of blending two families, and the absurdity of the situation.
Reception was generally positive. Critics praised the chemistry between the leads and the dark humour. The show is one of the few BBC sitcoms with a female-led cast and a female creator (Holly Walsh). The ensemble includes several established character actors, giving it a strong British comedy pedigree.
Where Can I Find Verified Cast Information?
“Meet the main cast of BBC One sitcom The Other One – Ellie White plays Cathy, Lauren Socha plays Cat …”
“Ellie White … Cathy … 12 episodes • 2017–2022”
“The Other One (2017 TV series); Holly Walsh · Ellie White · Lauren Socha · Rebecca Front · Siobhan Finneran”
The Other One Cast: Key Takeaways
In summary, the live-action cast of The Other One is led by Ellie White and Lauren Socha as the half-sisters, with Rebecca Front and Siobhan Finneran playing the two mothers. A total of 12 episodes were produced across three series between 2017 and 2022. No fourth season has been confirmed. For a complete list of every credited actor, see our The Other One cast and characters guide.
Frequently Asked Questions
Is The Other One based on a true story?
No, it is a fictional sitcom created by Holly Walsh. The premise of two half-sisters discovering each other after a father’s death is original.
How many episodes are in The Other One?
12 episodes across three series (including the pilot). Each series typically has 6 episodes.
Where can I watch The Other One?
In the UK, all episodes are available on BBC iPlayer. Internationally, episodes can be purchased on Amazon Prime Video (check regional availability).
Who created The Other One?
The series was created and written by Holly Walsh, a British comedian and writer known for her work on Motherland and The Other One.
Does The Other One have a season 3 cast?
The show has only three series (pilot, Series 1, Series 2). There is no separate “season 3” – the numbering can be confusing. The core cast remains the same throughout.
Who plays the father in The Other One?
Simon Greenall plays Colin Walcott, the deceased father. He appears in flashbacks and is mentioned frequently.
Are Ellie White and Lauren Socha related in real life?
No. They are actors who play half-sisters on screen. Both are British performers with separate careers.
Is there a Christmas special of The Other One?
No holiday special has been produced. The series concluded with a regular episode in Series 2.
What other shows has Ellie White been in?
Ellie White is known for The Windsors, The Crown, and Starstruck. She often appears in BBC comedies.
Did The Other One win any awards?
It did not win major awards but received positive reviews for its cast and writing. It maintains a loyal fanbase.
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