But Warner Music denies signing up Keisha, Mutya and Siobhan
Singer is suffering from 'a severe bout of nervous exhaustion'
Heidi Range says reports are 'completely not true'
Former band member speaks about split
Singer says it wasn't her decision to leave the group
Last original member leaves, yet Heidi and Amelle set to continue
A replacement is already being lined up, according to reports
Keisha Buchanan responds to reports she's had a bust-up with Amelle Berrabah
Acts announced for Oxfordshire bash
Band say people who choose 'don't know what they are talking about'