show CD:UK, where he announced that East 17 might make a comeback with its original lineup. In mid-February 2006, the group reformed and played their first comeback concert on 30 May at the Shepherd's Bush Empire in London. After reforming for the one-off performance, it was reported that Mortimer had left the group again due to a confrontation with Harvey, leading to an altercation between the two. A Channel 4 documentary, East 17: The Reunion, which charted the group's rise and fall, along with their subsequent attempt to re-launch, was broadcast in May 2007. East 17 continued to perform without Mortimer as a trio. They played at the University of Strathclyde on 24 September 2006, after DJ Colin Murray was unable to attend. A new single, "Fuck That", was due to be released in early 2008, along with a new album, "Universalization", but both went unreleased. East 17 performed at the 2009 Glastonbury Festival on 25 June in the dance lounge. In November 2009, the group collaborated with Mortimer in aid of the Born Free Foundation. They performed two of their best-known songs—"Deep" and "Stay Another Day"—for the Wild & Live! event at the Royal Albert Hall. After the performance, the four agreed that it would be best if they never sang together again. However, according to a BBC Radio 2 interview with Zoë Ball in December 2009, songwriter Tony Mortimer mentioned that the band were on "talking terms" and planning a comeback for 2010. Mortimer's second return, Harvey's departure, Dreelan's arrival and departure, and Dark Light (2010–2013) Tony Mortimer returned to East 17 in 2010. Brian Harvey left soon after, when his commitment was questioned by the rest of the group; he had been missing rehearsals and cancelling performances. In 2011, T-Mobile used the East 17 song "House of Love" in a Royal Wedding "spoof" commercial. In April 2011, it was announced that Blair Dreelan had joined the band for their Back to the Future tour in August and September 2011 to promote their comeback single, "Secret of My Life". On 28 September 2011, Dreelan left the group due to contractual obligations. On 27 November 2011, East 17 appeared as musical guests on X Factor Romania. East 17's fifth studio album, Dark Light, along with the new single "I Can't Get You Off My Mind", were released in 2012. Mortimer's third departure, Craig's arrival, 24/7, and Hendy's departure (2013–present)