Joshua Charlie Joseph Bradley (born 4 September 1992), better known by his online alias Zerkaa, is an English YouTuber, Twitch streamer, influencer, and Internet personality. He is a member of the British YouTube group, the Sidemen. In 2019, he was listed as the ninth most influential online creator in the United Kingdom by The Sunday Times. In 2022, he was the most watched Twitch streamer in the United Kingdom, with 17.68 million hours watched.
Early life and education Joshua Bradley was born on 4 September 1992 in Bermondsey, London. He attended Bexley Grammar School in Welling, where he met future fellow Sidemen member Tobi Brown. He claims to have had an interest in architecture in his early years, and used to love designing houses. As a child, Bradley took dance lessons and competed in street dance performances. His parents went through a divorce growing up, which he states led to him playing games. He claims to have played Call of Duty in his room for 8 hours, because he wanted an escape from the stress of his parents' divorce. In the Netflix documentary, The Sidemen Story, Bradley had mentioned that he suffered from anxiety.
He later attended Ravensbourne University and earned an upper second honours degree in digital film production. Before getting into content creation, Bradley tried working in a bank in London with his father, who was a banker himself, but left soon after. He also had a week-long stint at the Sky Sports studio.
Career In 2009, Bradley created his first YouTube channel, Zerkaa, to which he primarily uploaded video game content from games like Call of Duty and FIFA. He has subsequently launched six more solo YouTube channels — namely ZerkaaPlays, ZerkaaReacts, ZerkaaLive, ZerkaaActuallyPlays, ZerkaaGuesses, and ZerkaaCards.
Sidemen
In October 2013, Bradley co-founded and became a member of the British YouTuber group, the Sidemen. He is the eldest amongst the seven members of the Sidemen. He lived with three other members of the group — Vikkstar, KSI, and Miniminter — from 2014 until 2018, creating content regularly, after which he moved into an apartment with his girlfriend. The Sidemen publishes content around a variety of themes including challenges, sketches and video game commentaries.
In 2018, Bradley co-starred alongside the rest of the Sidemen in the YouTube Premium series The Sidemen Show. In 2019, Bradley was listed as the ninth most influential online creator in the United Kingdom by The Sunday Times. In a 2021 article discussing gambling issues surrounding the FIFA game series, Bradley was cited by The Sunday Times as an example of a YouTuber sponsored by EA to make pack-opening videos.
Twitch streaming Bradley started streaming on Twitch in 2010. He is also a Twitch partner. In 2022, he was the most watched Twitch streamer in the United Kingdom, with 17.68 million hours watched. He was also cited as a streamer featuring walkthroughs of the 2023 video game Hogwarts Legacy by Guinness World Records. He was nominated for Best Role-play Streamer at the 2022 Streamer Awards.
Other ventures
Sidemen ventures
Bradley and the Sidemen have founded multiple businesses throughout their online careers. In 2014, the group launched a clothing brand under the Sidemen Clothing banner. In November 2021, they founded a restaurant chain Sides in collaboration with Reef. In October 2022, they launched their own vodka brand, XIX Vodka. In March 2024, they launched a breakfast cereal brand, Best Cereal, in collaboration with Mornflake. In May 2025, they launched their own venture capital firm, Upside VC. Bradley was a Director of the firm but has formally resigned from the position.
Businesses In 2017, Bradley launched his own clothing line, ZRK London, selling streetwear apparels like T-shirts, hoodies, and caps. In 2023, the clothing line was renamed to Internet Made.
Personal life Bradley has been in a relationship with Freya Nightingale since 2010. They were engaged on 15 January 2024, and got married on 6 September 2025 in France. On 7 June 2026, Bradley announced via Instagram that they were expecting their first child.
Bradley is a supporter of Millwall F.C. and claims to have a season ticket since he was six years old.
Filmography + Film Year Title RoleNetwork Notes 2018 KSI: Can't Lose HimselfYouTube Documentary 2023 KSI: In Real LifeAmazon Prime Video Documentary The Spy Who Loved Eggnog Timmy / Undercover Agent / Adolf's Father / HimselfYouTube Short Film 2024The Sidemen StoryHimselfNetflixDocumentary
+ Web roles Year Title Role Network Notes 2014 The Sidemen Experience Himself Comedy Central Main role; 5 episodes 2017 YouTube Rewind YouTube Episode: "The Shape of 2017" 2018 The Sidemen Show YouTube Premium Main role; 7 episodes Formula E Voltage YouTube Guest; Episode "2018 Ad Diriyah ePrix" 2020 How To Be Behzinga Guest; 3 episodes 2024 The Chase: Sidemen EditionSpecial Spin-Off Episode
+ Television roles Year Title Role Network Notes 2024–present Inside Host YouTube, Side+, Netflix Reality show created by the Sidemen2025–presentInside USAHostNetflixAmerican reality show created by the Sidemen 2026 SideMenu Contestant YouTube, Amazon Prime Video Cooking show created by the Sidemen 2026-present Outside Host Netflix Spin off series of Inside, created by the Sidemen
+ Music videos Year Title Artist(s)Role 2022 "Don't Lie" A1 x J1 feat. Nemzzz Himself 2025 "365" Talia Mar "Chemical" Vikkstar, Adalaide Adams
Discography Singles As Lead Artist +List of singles as a lead artist, with selected chart positions, showing year released and album name Title Year Peak chart positions Album UK "Told You" 2022 —rowspan="2" "Here To Stay" —
Charted songs +List of charted songs, with selected chart positions and album name Title Year Peak chart positions Album UK UKR&B UKInd. NZHot SCO IRE "The Gift" 2019 77 40 11 27 26 — rowspan="2" "This or That"2023 — — 23 14 — — "—" denotes a recording that did not chart or was not released in that territory.
Guest appearances + List of non-single guest appearances, with other performing artists Title Year Other artist(s) Album "The Gift" 2019 Sidemen, S-X "Tommy T" 2021 Wiked Golden Boy "This or That" 2023 Sidemen "How Many Times" 2024 Eli Porter, Wiked, SparkKNE The Vault "Jump Out Gang - Remix"Eli Porter, Pixel Money
Music videos + List of music videos as lead and featured artist, showing directors Title Year Director(s) As lead artist "Told You" 2022 rowspan="2" "Here To Stay" As featured artist "The Gift" 2019 Konstantin "Tommy T" 2021 "This or That" 2022 Himself Miniminter Behzinga W2S "How Many Times" 2024 rowspan="2" "Jump Out Gang - Remix" 2025
Bibliography +YearTitlePublisherISBN identifierRef.2016Sidemen: The BookCoronet Books
Awards and nominations Year Award Category Recipient(s) Result 2017 British Book Awards Non-Fiction: Lifestyle Book of the Year "Sidemen: The Book" 2019 Shorty Awards Best YouTube Ensemble Himself 2022 The Streamer Awards Best Role-Play Streamer Himself
World Records + Publication Year World record Guinness World Records 2022 Most viewers for a charity sports match live stream on YouTube
Listicles PublisherYearListicleResultThe Sunday Times2019UK's Top 100 Influencer9th
Notes
References
External links