Millie Bobby Brown gained 3.6 million Instagram followers in December 2025, outpacing Anthony Joshua’s 2.2 million despite the heavyweight boxer’s high-profile title fight. “Stranger Things” cast members, Formula 1 drivers celebrating Lando Norris’s championship, and reality TV winners dominated the rankings, while rappers and lifestyle creators rounded out the top 15.
Here are the fastest-growing UK Instagram accounts from last month.
#1. Millie Bobby Brown | @milliebobbybrown Gained: +3.6M followers December total: 70.7M followers
Actress and producer best known for “Stranger Things” and “Enola Holmes,” with December’s surge likely tied to franchise announcements or new project reveals.
Streamer and internet personality who won ITV’s “I’m a Celebrity… Get Me Out of Here!” in December.
AngryGinge’s growth originates from his career as a streamer and internet personality, built through gaming content, live streams, and creator-led community engagement long before his December reality-TV win. While “I’m a Celebrity … Get Me Out of Here!” significantly accelerated his reach, the underlying audience foundation is creator-native. The account scales through personality, audience familiarity, and social-native humor rather than through scripted entertainment or traditional celebrity pathways.
Mother-and-daughter lifestyle creators producing family content for UK audiences.
Georgia Tremlin’s account is built entirely around platform-native family and lifestyle content, centered on mother-and-daughter storytelling designed for Instagram and short-form video feeds. Growth is driven by relatability, consistency, and strong emotional resonance, rather than by external media exposure. Its December momentum reflects sustained algorithmic performance rather than a single promotional event or franchise-driven spike.
Nii A. Ahene is the founder and managing director of Net Influencer, a website dedicated to offering insights into the influencer marketing industry. Together with its newsletter, Influencer Weekly, Net Influencer provides news, commentary, and analysis of the events shaping the creator and influencer marketing space. Through interviews with startups, influencers, brands, and platforms, Nii and his team explore how influencer marketing is being effectively used to benefit businesses and personal brands alike.
Millie Bobby Brown gained 3.6 million Instagram followers in December 2025, outpacing Anthony Joshua’s 2.2 million despite the heavyweight boxer’s high-profile title fight. “Stranger Things” cast members, Formula 1 drivers celebrating Lando Norris’s championship, and reality TV winners dominated the rankings, while rappers and lifestyle creators rounded out the top 15.
Here are the fastest-growing UK Instagram accounts from last month.
#1. Millie Bobby Brown | @milliebobbybrown
Gained: +3.6M followers
December total: 70.7M followers
Actress and producer best known for “Stranger Things” and “Enola Holmes,” with December’s surge likely tied to franchise announcements or new project reveals.
#2. Anthony Joshua | @anthonyjoshua
Gained: +2.2M followers
December total: 18.6M followers
Professional heavyweight boxer whose month included a high-profile title fight that drew global attention.
#3. Jamie Campbell Bower | @bowerjamie
Gained: +1.6M followers
December total: 6.3M followers
Actor and musician from “Stranger Things” and “Fantastic Beasts,” benefiting from renewed interest in Netflix properties.
#4. FORMULA 1® | @f1
Gained: +718K followers
December total: 40.7M followers
Official F1 account celebrating Lando Norris’s 2025 world championship throughout December.
#5. Lando Norris | @lando
Gained: +708K followers
December total: 11.7M followers
McLaren driver who clinched the 2025 Formula 1 World Championship.
#6. AngryGinge | @angryginge13
Gained: +535K followers
December total: 2.3M followers
Streamer and internet personality who won ITV’s “I’m a Celebrity… Get Me Out of Here!” in December.
AngryGinge’s growth originates from his career as a streamer and internet personality, built through gaming content, live streams, and creator-led community engagement long before his December reality-TV win. While “I’m a Celebrity … Get Me Out of Here!” significantly accelerated his reach, the underlying audience foundation is creator-native. The account scales through personality, audience familiarity, and social-native humor rather than through scripted entertainment or traditional celebrity pathways.
#7. Olivia Dean | @oliviadeano
Gained: +394K followers
December total: 3.8M followers
Singer-songwriter promoting her album “the art of loving” with December tour dates and chart momentum.
#8. Aitch | @aitch
Gained: +367K followers
December total: 2.9M followers
Manchester rapper with new music releases driving year-end engagement.
#9. Central Cee | @centralcee
Gained: +288K followers
December total: 16.7M followers
West London rapper continuing his international breakthrough with festival bookings and collaborations.
#10. George Russell | @georgerussell63
Gained: +243K followers
December total: 8.1M followers
Mercedes Formula 1 driver who finished the 2025 season as Norris’s main championship rival.
#11. Georgia Tremlin | @georgieandwinniee
Gained: +221K followers
December total: 1.2M followers
Mother-and-daughter lifestyle creators producing family content for UK audiences.
Georgia Tremlin’s account is built entirely around platform-native family and lifestyle content, centered on mother-and-daughter storytelling designed for Instagram and short-form video feeds. Growth is driven by relatability, consistency, and strong emotional resonance, rather than by external media exposure. Its December momentum reflects sustained algorithmic performance rather than a single promotional event or franchise-driven spike.
#12. Netflix UK & Ireland | @netflixuk
Gained: +216K followers
December total: 4.5M followers
Official UK account promoting Christmas releases and “Stranger Things” updates throughout December.
#13. Maisie Williams | @maisie_williams
Gained: +215K followers
December total: 9.5M followers
Actress best known for “Game of Thrones,” with December activity tied to new project announcements.
#14. Shona McGarty | @shonabmx
Gained: +214K followers
December total: 828K followers
Actress and singer who departed “EastEnders” after 15 years, with her exit storyline airing in December.
#15. Tom Read Wilson | @tomreadwilson
Gained: +201K followers
December total: 1.4M followers
TV personality and presenter known for “Celebs Go Dating” and book releases promoted during the holiday season.
The ‘Stranger Things’ Surge
Three “Stranger Things” cast members rode franchise momentum in December:
The timing suggests coordinated announcements around final season production or premiere dates.
F1’s Championship Month
Lando Norris’s world championship delivered gains across the sport:
The title race concluded in early December, generating sustained attention through year-end coverage.
Data from HypeAuditor, December 2025
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