Demi Sims first appeared on British television screens in 2014 as a cast member of The Only Way Is Essex (TOWIE). A decade later, she has built a career that spans reality television, a family spin-off show, a professional boxing debut, and a significant social media following. She is the daughter of Tony Sims, a well-known boxing trainer, and part of a family that includes sisters Frankie and Chloe Sims and cousin Joey Essex. As of mid-2026, Sims is dating Australian reality star Gabby McCarthy and holds a 1-0 professional boxing record.
Who Is Demi Sims? Biography and Background
Demi Sims was born on 6 September 1996 in England. She is best known for appearing on The Only Way Is Essex, where she was a regular cast member from November 2018 until July 2022. She also starred in the family spin-off House of Sims alongside her sisters Frankie and Chloe and her brother Charlie.
- Full Name: Demi Sims
- Born: 6 September 1996 (age 29–30)
- Known For: TOWIE, House of Sims, Misfits Boxing
- Instagram: @demsims (543K+ followers)
Key Insights
- Demi Sims transitioned from reality TV to professional boxing under Misfits Boxing, with a 1-0 record.
- She is currently in a relationship with Love Island Australia star Gabby McCarthy as of early 2026.
- Her Instagram following exceeds 543K, indicating strong social media influence.
- She has diversified her income through OnlyFans content creation.
- Her boxing trainer is her father, Tony Sims, an elite trainer who has worked with world champions.
- She is openly bisexual and has spoken about living with vitiligo.
Biographical Snapshot
| Detail | Information |
|---|---|
| Full Name | Demi Sims |
| Date of Birth | 6 September 1996 |
| Age | 29 (as of 2026) |
| Nationality | English |
| Known For | The Only Way Is Essex (TOWIE), House of Sims, Misfits Boxing |
| Boxing Record | 1-0 (Misfits Boxing / Netflix) |
| Instagram Followers | 543K+ |
| Current Partner | Gabby McCarthy (as of April 2026) |
| Previous Relationships | Jazz (split Dec 2025), Francesca Farago (rumored) |
Demi Sims’ TOWIE Career and Reality TV Journey
Sims made her first appearance on The Only Way Is Essex in 2014. She returned as a regular cast member in November 2018 and remained with the show until July 2022. She made a one-off return in late 2024.
In 2021, she appeared in the family spin-off House of Sims, which followed the lives of her sisters Frankie and Chloe and brother Charlie. The show gave viewers a closer look at the Sims family dynamic outside of the TOWIE setting.
Sims has also appeared on other British reality shows including CelebAbility, Celebs Go Dating, and Celeb Ex in the City. She moved to Los Angeles in 2021 with her family but returned to the UK for her TOWIE appearances in 2024.
Demi Sims’ Boxing Career: Record and Fights
Demi Sims made her professional boxing debut on 30 August 2025 at Misfits Boxing 22 in Manchester. She won a points victory over opponent Nadeshi Hopkins over four rounds. The event was streamed live on Netflix.
Sims trains under her father, Tony Sims, who is an elite boxing trainer. She has described boxing as a long-held interest that began from watching her father work with other fighters. After her debut, she called the crowd “electric” and congratulated fellow fighter Tommy Fury on his performance.
- Debut Date: 30 August 2025 (Misfits Boxing 22)
- Opponent: Nadeshi Hopkins
- Result: Won by points (4 rounds)
- Trainer: Tony Sims (her father)
- Next Event Teased: “Unfinished Business” in Manchester (29 March 2026), under KSI’s undercard
- Venue: AO Arena, Manchester
- Streaming: Live on DAZN Boxing
A next event has been teased for 29 March 2026 at the AO Arena in Manchester, under KSI’s undercard. The event is titled “Unfinished Business” and will be available live on DAZN Boxing.
Who Is Demi Sims Dating? Relationship History
Demi Sims is currently in a relationship with Gabby McCarthy, a contestant from Love Island Australia. The relationship began in April 2026. This is her most recent public romance.
Prior to Gabby McCarthy, Sims was in a relationship with Jazz Saunders, who appeared on Made in Chelsea. That relationship ended in December 2025.
Sims has also been romantically linked to several other reality personalities. She dated Leonie McSorley, who appeared on Ex on the Beach, and Eve Gale, who was on Love Island. A rumored relationship with Francesca Farago from Too Hot to Handle has been widely reported but has not been officially confirmed by either party.
Demi Sims on Social Media and OnlyFans
Sims maintains an active presence on Instagram under the handle @demsims, where she has amassed over 543,000 followers. Her Instagram bio describes her as a “Boxer for @misfitsboxing 1-0 @netflixuk.”
She also creates content on OnlyFans, adding another revenue stream to her portfolio. The exact details of her OnlyFans content strategy are not publicly documented, but the platform is part of her broader digital presence alongside her reality TV and boxing careers.
Demi Sims Timeline
- 6 September 1996 — Born in England
- 2014 — First appeared on TOWIE
- November 2018 – July 2022 — Regular cast member on TOWIE
- 2021 — Appeared in House of Sims spin-off
- 2025 — Began boxing career with Misfits Boxing; won debut fight (1-0) on Netflix
- December 2025 — Split from partner Jazz
- Early 2026 — Confirmed relationship with Gabby McCarthy (Love Island Australia)
- April 2026 — Latest news coverage of current activities
What Is Confirmed and What Remains Unclear
| Established Information | Information That Remains Unclear |
|---|---|
| Demi Sims was born 6 September 1996 | Relationship with Francesca Farago is rumored but not officially confirmed by either party |
| She appeared on TOWIE from 2014 and again 2018–2022 | Exact identity of her father is not publicly verified beyond Tony Sims |
| She has a 1-0 boxing record with Misfits Boxing on Netflix | Exact net worth figure is not publicly available |
| She has over 543K Instagram followers | Details of her OnlyFans content strategy are speculative |
| She split with Jazz in December 2025 | Limited biographical information about Gabby McCarthy beyond her TV appearance |
| She is dating Gabby McCarthy as of early 2026 | No details on next boxing opponent or date beyond the teased March 2026 event |
Context: Demi Sims as a Multi-Platform Celebrity
Demi Sims represents a modern type of celebrity who operates across multiple platforms simultaneously. She began on reality television with TOWIE, moved to a family-focused spin-off, entered influencer boxing through Misfits Boxing, and maintains a direct-to-fan income stream through OnlyFans. Her move into boxing aligns with a broader trend of reality TV stars entering the sport, following the path set by figures such as KSI and Jake Paul. Her Instagram following of over 543K forms a central part of her personal brand and provides her with a direct communication channel to her audience.
Sources and Quotes
“Demi Sims (born 6 September 1996) is an English television personality. She appeared on The Only Way Is Essex in 2014, between November 2018 and July 2022.”
— Wikipedia
“Demi is currently dating Love Island Australia star Gabby McCarthy. Demi and Jazz split in December 2025.”
— Closer Online (April 2026)
“Demi Sims is a reality star who first rose to fame on TOWIE, before leaving the show to appear in House of Sims. She’s also an OnlyFans content creator.”
— Grazia Daily (October 2025)
Summary: What Is Demi Sims Doing Now?
As of mid-2026, Demi Sims is actively pursuing her boxing career while maintaining her reality TV presence. She has a 1-0 professional record, a relationship with Gabby McCarthy, and continues to grow her social media following. A potential next boxing match under Misfits Boxing has been teased for March 2026. Sims remains a prominent figure in British entertainment media, balancing her work across television, sport, and digital content. For more on other TOWIE personalities, see Sam Faiers and Jamie Laing.
Frequently Asked Questions
What is Demi Sims’ net worth?
Demi Sims’ exact net worth is not publicly disclosed. She earns from reality TV appearances, boxing, OnlyFans, and social media endorsements.
Does Demi Sims have children?
There is no public information indicating Demi Sims has children.
What is Demi Sims’ height?
Demi Sims’ height is not officially listed in public sources.
Is Demi Sims still on TOWIE?
No, Demi Sims left TOWIE in July 2022 and has not returned as a regular cast member. She made a one-off appearance in late 2024.
What is Demi Sims’ boxing nickname?
Her boxing nickname is ‘Bam Bam’ as seen on her Instagram profile.
Who is Demi Sims’ father?
Her father is Tony Sims, an elite boxing trainer who has worked with world champions. He also trains her for her professional boxing career.
Did Demi Sims date Francesca Farago?
A relationship with Francesca Farago has been rumored but has not been officially confirmed by either party.
What happened between Demi Sims and Jazz?
Demi Sims and Jazz Saunders, who appeared on Made in Chelsea, ended their relationship in December 2025. No further details about the split have been publicly reported.
Does Demi Sims have OnlyFans?
Yes, Demi Sims is an OnlyFans content creator alongside her reality TV and boxing careers.
What is House of Sims?
House of Sims is a reality TV spin-off that followed the lives of Demi Sims and her sisters Frankie and Chloe, along with brother Charlie. It aired in 2021.
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Oscar Friel covers local business, housing and jobs across Edinburgh and Scotland.