The band were founded in 2011. They have uploaded videos of their covers on YouTube. They stated that fans' comments encouraged them to audition. They frequently busked on the streets of London. They also released a charity single in 2011.
It was reported a day after the final that Simon Cowell was intending to sign them to his record label. They announced on 17 June that they were to embark on a 3-day tour, visiting London, Manchester and Birmingham from 24–26 July. On 15th August 2013 the band announced they had been signed to Sony.
It was also revealed during their time in the show that will.i.am had been coaching them. However during an interview the Luminites absolutely denied that and made it clear they had a 5-second photo opportunity with him and that was the extent of the contact. On 15 August, the group announced that they were signed in an Instagram video. They released their debut single "Do Something" on 10 November.