The dome was publicly renamed as The O2 on May 31, 2005, in a £6 million-per-year deal with telecommunications company O2 plc, now a subsidiary of Telefónica O2. This announcement, which presaged a major redevelopment of the site that retained little beyond the shell of the dome, gave publicity to the dome's transition into an entertainment district including an indoor arena, a music club, a cinema, an exhibition space and bars and restaurants. This redevelopment was undertaken by the dome's new owners, the Anschutz Entertainment Group, to a design by HOK SVE and Buro Happold. It cost £600 million, and the resulting venue opened to the public on June 24, 2007, with a concert by rock band Bon Jovi.[14]

Notice is says a music club
I think that is the space that the nighclub is in

I'm in London on September 19th & 20th and guess what?

Matter Official Launch
Matter officially launches with an opening night on Friday 19th September, as the Live Night welcomes Unkle (live), Late of the Pier (live), Iglu and Hartl. This will be swiftly followed by a Saturday night graced by one of the biggest club DJs on the scene, Carl Cox. He’ll be bringing along Kissy Sell Out and Yousef for a party worthy of welcoming Matter to London.

More Matter Partying
The next two weekends will see even more big name DJs and live musicians taking to the Matter stage, ready to whip up a frenzy for London club fans. With the likes of Mylo, Casino Royale, Sasha, Micky Slim, Deadmau5, Chris Lake and Mark B all performing, Matter looks like it’s going to give the very best London clubs a very good run for their money.

source:www.viewlondon.co.uk
Dom K.