The original stars of British girl group Sugababes sealed their comeback by reviving their back catalogue for their first full live show together in 12 years on Thursday night (01Aug13).

The singers have reunited under the new name Mutya Keisha Siobhan and they premiered their first new single, Flatline, this week (beg29Jul13).

They also returned to the stage with a show at London's Scala venue on Thursday, marking their first full concert together in more than a decade, and the group kicked off the gig by performing the Sugababes' first ever single, 2000's Overload.

They also thrilled fans with hits including Run For Cover, Freak Like Me, Stronger, and Push The Button.

In a message posted on after the show, singer Keisha Buchanan writes, "So much love in the air! Thanks to everyone who came and supported us! We had a ball! So shocked by the turn out!... Whoop Best. Fans. Ever."

A tweet on the Mks page reads, "Thank you all so much for being part of such a special night for us. Blown away by the love and support."

The band's original line-up broke down in 2001 when Siobhan Donaghy left. She was followed out the door by Mutya Buena in 2005 and Buchanan in 2007, while the band continued performing with a new line-up.

Jade Ewen, who joined Sugababes in 2009 to replace Buchanan, recently sparked speculation that the reunion of the pop group's original members spelled the end for the remaining line-up, telling, "I don't even know if the band stuff is going to happen again, if I'm completely honest... I think we're pretty much done."