Brothers Tony and Josh Friend have individually been DJing since 2001, only forming the band in 2010 with Josh's roommate Matthew Curtis and more recent guitarist Nick Tsang. They started performing dubstep with soulful vocals but have since gradually incorporated rock elements into their music, most notably in "To The Stars", "Time" and "Freedom".
Modestep began work on their debut album during early January 2011, with their debut single "Feel Good" being released in the United Kingdom on 6 February 2011; managing to reach the BBC Radio 1 A Playlist during the weeks prior to release. The single was released as part of a 3-track extended play, including another track entitled "Bite The Hand". On 13 February, the single debuted at number 38 on the UK Singles Chart, also reaching number 5 on the independent releases chart and number 6 on the dance releases chart. The music video of the new version of their single "Sunlight" was released on YouTube on 3 July, passing 1 million views within four days, also making the Radio 1 A-list and debuting at number 16 in the UK charts. "To The Stars" has also made it onto the Radio 1 A-list and was released on 6 November. Their fourth single "Show Me A Sign" made its YouTube debut on 19 March 2012 and was released on 6 May 2012. They were also a support act for LostprophetsWeapons tour in mid-2012 and have been received extremely well by audiences. In July 2012, the fifth single from Evolution Theory, entitled "Another Day", was aired on BBC Radio 1Xtra. Modestep had previously performed this song to open their set when supporting Lostprophets on their spring UK tour. Just before the song was aired, Tony Friend revealed in an interview that Modestep hoped to release their debut album on September 3, 2012. After the album was pushed back to January 14, 2013, it was pushed back yet again to February 11, 2013.
Modestep performed in the Dance Hall at the Pukkelpop festival, Belgium on Thursday 18 August 2011. Shortly after their performance, the festival was canceled due a heavy rainstorm, large hail and a windspeed of 170 km/h (106 mph).
Modestep played at NASS 2011, and headlined the main stage at NASS Festival 2012 on Saturday 7 July 2012.
Modestep headlined the main stage at Redfest 2012 on Friday 20 July 2012.
Modestep performed in the Dance Hall at the Pukkelpop festival, Belgium on Friday 16 August 2012.
Modestep have announced via their social pages that they are now in the studio working on new material.  On 16 October 2013 they began work on the first track from their forthcoming second studio album.
Modestep has various musical styles and sounds as they have incorporated electronical elements such as dubstep and drum & bass, however they have also incorporated hard rock into their style, thus giving them a unique style. Josh Friend has also incorporated vocals into their music.
They have been placed next to bands such as Pendulum and The Prodigy due to their musical style, however they are able to play along with other artists such as The Script, Skrillex, Ed Sheeran and Flux Pavilion. In an interview with Soundsphere Magazine, the members explained that "We’re all massive ‘tech-head’ musicians...". It is explained how each member of the band influences their musical style with different genres of music, also explaining that their unique musical style was unintentional.