Not that I saw, I definately saw Leia and the two younger ones, and I saw another adult female but didn't have the best views so it could have been either, though I think it was Sarikei
Thank you Zoogiraffe and JR for your reliable information. I wonder why Martha isn't currently mixed with the other's, something to do with fighting/dominance perhaps?
The female gibbon was today mixed in with the other two female Borneans and the 2 youngsters. Another thing of note is that both netted enclosures are in use by the Borneans with the door connecting them open.