Joshua Bradley (born 4 September 1992), better known as Zerkaa and his stage name Josh Zerker, is an English YouTuber, streamer, and Internet personality. He is a member of the British YouTube group known as the Sidemen. In 2022, he was the most watched Twitch streamer in the United Kingdom, with 17.68 million hours watched. As of October 2023, his main YouTube channel has over 4.6 million subscribers and over 800 million video views.

Early life and education

Joshua Bradley was born on 4 September 1992 in Bermondsey, London. Bradley attended Bexley Grammar School, where he met future fellow Sidemen member Tobi Brown. He later achieved an upper second honours degree in digital film production at Ravensbourne University.

Career

In 2009, Bradley created his first YouTube channel, Zerkaa, to which he primarily uploaded video game content from Call of Duty and FIFA. In October 2013, Bradley co-founded and became a member of the British YouTuber group known as the Sidemen. He lived with three other members of the group from 2014 until 2018, after which he moved into an apartment with his girlfriend. Bradley also launched his own clothing line, named ZRK.

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. He was also cited as a streamer featuring walkthroughs of the 2023 video game Hogwarts Legacy by Guinness World Records.

Personal life

Bradley is a supporter of Millwall F.C. and has had a season ticket since he was six years old. He has been in a relationship with Freya Nightingale since 2010. They were engaged in January 2024. In The Sidemen Story, he said that he had anxiety.

Filmography

Film

Year	Title	Role	Notes	Ref.
2018	KSI: Can't Lose	Himself	Documentary
2024	The Sidemen Story

Web roles

Year	Title	Role	Network	Notes	Ref.
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 Edition			Special Spin-Off Episode
	Inside	Host		Reality Show created by the Sidemen

Music videos

Year	Title	Artist(s)	Role	Ref.
2022	"Don't Lie"	A1 x J1 feat. Nemzzz	Himself

Discography

Charted songs

List of charted songs, with selected chart positions and album name

Title	Year	Peak chart positions						Album
		UK	UK R&B	UK Ind.	NZ Hot	SCO	IRE
"The Gift" (as part of Sidemen featuring S-X)	2019	77	40	11	27	26	—	Non-album singles
"—" denotes a recording that did not chart or was not released in that territory.

Awards and nominations

Year	Award	Category	Recipient(s)	Result	Ref.
2017	British Book Awards	Non-Fiction: Lifestyle Book of the Year	"Sidemen: The Book" (shared with the Sidemen)	Nominated
2019	Shorty Awards	Best YouTube Ensemble	Himself (shared with the Sidemen)	Nominated
2023	The Streamer Awards	Best Role-Play Streamer	Himself	Nominated