It's Katie Price, aka Jordan. That audio leaked a couple of months ago. It's supposed to be audio of them lipsyncing on a tv show but an engineer recorded what they were actually singing. They issued a statement to say the audio is fake, but a lot of people still think its real.
I got the PV of the song and synced the audio to it and uploaded it, but they got my video removed (check the message in this link! ), so I made a new video and that was it.