His love of dance music developed as a teenager in South London listening to local pirate stations and early grime shows on Rinse FM. He attended the prestigious BRIT School, which he claims taught him many of his talents, except producing. Steven entered the annual BRIT school spelling bee in 2004, but finished 5th when he failed to spell the words "original" and "production". However, he told PRIC Magazine that he still brings his participation certificate to shows "for luck", as it taught him that "all I need to do is try my hardest".
Around 2006, Oneman began to make his name in the dubstep scene for his virtuosic vinyl-only mixes, which combined older garage tracks he pretended he grew up with, with brand new dubstep tracks. At a time when halfstep rhythms were becoming established as the norm within dubstep, Oneman’s approach was to play them instead of making them. He was, he says, interested in “trying to [mix] two tracks together to make a whole new track. Because I didn't produce tunes, my whole thing would be if I had two tracks I picked that mixed together really well, I'd use that as a statement mix, as producing actually proved pretty hard.”
In 2007 he was asked to join Rinse FM, and has become a "figure synonymous with the Rinse FM station and the brand and subculture surrounding it", but was reportedly sacked from the radio station for drug-related lack of professionalism and original production. 
In 2008, Oneman was the first DJ to appear on the Mary Anne Hobbs BBC Radio 1 show without releasing a record, which he still has not done, as well as the first ever DJ on a BBC show with Shortius Manletism, the rare condition which he was born with. 
In 2010 Oneman launched a record label, 502 Recordings, whose roster is made up of artists who do produce. It has released productions by Teeth, Jay Weed, Fis -T, and Destro.
Standard Place is regular event / underground party hosted and DJ'd by Oneman, Jon Rust, DJ Reecha and ASBO. Standard Place began with the four DJ's playing DJ sets for Boiler Room and Fabric (Club). The Standard Place crew concept was then continued to create events taking place across London.
He has performed live at festivals such as Bestival 2012, Kraków's 2012 Unsound Festival. He supported SBTRKT at Shepherds Bush Empire in London. Ticketmaster users gave the concert a near 5 star rating. In a review by 'Give Pop a Chance!' he was an asset to the line up "Luckily Oneman has some big bassy tunes up his sleeve that keep an impatient crowd dancing as the stage is prepared for SBTRKT." In February and March 2013, Oneman toured the UK and Europe to celebrate his new release 'Solitaire'. Oneman completed his first US tour with a string of North America dates throughout March 2013. The tour included sets at SXSW along with Jackmaster, Wildarms and Bremnar on the Fader Fort stage. He toured and played festivals in Europe in the spring and summer 2013, including at O2 Oxford, The Pleasure Principle, Field Day, Bugged Out Weekender, and Sonar Festival where he was dubbed one of FACT magazines' must-see acts. In April 2014, Oneman announced he would be touring North America in May 2014 alongside LA producer, DJ and Body High label co-founder Jerome LOL. In April 2016 it was announced that Oneman and My Nu Leng will be touring across Europe, paying back to back at a string of festivals including, Distortion, Reading & Leeds and Bestival.
In 2014, Oneman and fellow DJ Jackmaster came together to collaborate on a new live music project under the name 'Can U Dance'. Can U Dance is a live DJ venture proposing back 2 back sets between the two DJ's. In 2014, they played their new show across Europe and joined the summer festival circuit at Field Day, Parklife, Exit, Dour, Dekmantel and Dimensions festival. Can U Dance also recorded a BBC1 Essential Mix live at Glastonbury Festival 2014.
In June 2016, it was announced that Oneman would be this summers XOYO resident. The 13-week residency saw the DJ play and curate every Friday at XOYO from July to September. 
“this Summer’s residency has been something I’ve been working towards for a while. It gives me the chance to showcase some of my favourite artists and DJs that have influenced me throughout the years and to celebrate my hometown, London, the city that birthed UK Garage, Grime, Funky, Dubstep and more” 
FACT Magazine featured a full review of the Rinse:11 album on 15 March 2010, Journalist Tom Lea stated, "Oneman, in his own, understated way, changed the face of British dance music". 
Oneman and Jackmaster were acknowledged as 'Artists of the day' on the Bestival Facebook page in 2012.
Pitchfork Media rated FabricLive.64 mix album an 8.0 and stated that, "Applauding FabricLive.64 for its potential didacticism, though, would be unjustly ignoring just how much fun it is to listen to, how easily and pleasantly it moves, how Steve Bishop is playing to the rafters and pulling out all the stops when his name alone represents a seal of approval for many". The album was reviewed by Resident Advisor's Andrew Ryce in August 2012, "Those moments of creative synthesis are Fabriclive 64's saving grace—Oneman might not be a flashy jock, but he's a unique one. He has a way of pulling off the unconventional every single time, whether it's long, extended blends that sound like they shouldn't work or a hard pan from 2010 to 1998". Fabric went on to applaud Oneman by stating, “There are DJs that are heavily tied to styles, people who go on to become figures synonymous with a certain sound or a particular approach to mixing; and then there are DJ’s DJs – a different breed of people who manage to make the whole process of blending records from disparate genres look (and sound) seamless. Often, it’s not just about beat matching perfectly, it’s as much about capturing a mood and evolving it through your record selections as it is locking on to a consistent rhythm and that’s something that Streatham bred DJ, Steve Bishop, has proven himself to be mightily adept at over the years”.
- Rinse:11 (2010)
- FabricLive.64 (2012)
- Solitaire Vol.1 (2013)
- Remixes & Edits (2013)
- Solitaire Vol. 2 (2013)
- Solitaire Vol. 3 (2014)
- "You Took Your Time" by Mount Kimbie featuring King Krule, with an additional verse from Jeremiah Jae.
- "Rinse 11 compiled by Oneman: details inside". Fact Magazine. 19 January 2010. Retrieved 3 April 2013.
- "South by South Yorkshire: Oneman & Toddla T go head to head". Fact Magazine. 15 August 2012. Retrieved 3 April 2013.
- "Preview New 502 Recordings Release". hyponik. Retrieved 20 January 2015.
- "Introducing: Standard Place". fabriclondon.com. Retrieved 20 January 2015.
- "Bestival 2012 To Be Live Streamed". Clash Magazine. Retrieved 20 January 2015.
- MintCard (16 October 2012). "SBTRKT Concert Reviews and Ratings - Ticketmaster". Ticketmaster. Retrieved 20 January 2015.
- Joe Copplestone. "GivePopAChance!: GIG REVIEW: SBTRKT @ Shepherds Bush Empire, London, feat. Kwes & Oneman - 5/10/12". givepopachance.blogspot.co.uk. Retrieved 20 January 2015.
- "Stream: Oneman @ SXSW, Converse FADER Fort". AO-AO. Retrieved 20 January 2015.
- "Best Of Barcelona: the 20 must-see acts in – and around – Sonar 2013". factmag.com. Retrieved 20 January 2015.
- Shawn Reynaldo. "Jerome LOL Announces North American Tour with Oneman, Gives Away New Edit". XLR8R. Retrieved 20 January 2015.
- "Oneman Announces Summer Tour B2B with My Nu Leng « GIANT MEN MANAGEMENT". giantmenmanagement.com. Retrieved 2016-05-09.
- "Disclosure Presents Wild Life in Dance Arena". STILL IN BELGRADE. Retrieved 20 January 2015.
- "Jackmaster & Oneman present Can U Dance". Field Day Festival. Retrieved 20 January 2015.
- Fitzmaurice, Larry (13 August 2012). "Oneman: Fabriclive 64". Pitchfork Media. Retrieved 3 April 2013.
- Ryce, Andrew (14 August 2012). "RA Reviews: Oneman – Fabriclive 64". Resident Advisor. Retrieved 3 April 2013.
- "Bestival - The Bestival 2012 artist of the day is ONEMAN... - Facebook". facebook.com. Retrieved 20 January 2015.
- "Oneman". Pitchfork. Retrieved 20 January 2015.
- "RA Reviews: Oneman - Fabriclive 64 on Fabric Records (Album)". Resident Advisor. Retrieved 20 January 2015.
- "NEWSFLASH: Oneman to mix FABRICLIVE 64". fabriclondon.com. Retrieved 20 January 2015.
- "FACT mix 239: Jamie xx & Oneman". Fact Magazine. 13 April 2011. Retrieved 3 April 2013.
- "93. Oneman – Ninety Three Mixtape". LuckyMe. Retrieved 3 April 2013.