Thanks skybie, we didn't want a white cat but he chose Ava and has been happy to go near her so we thought it best to go for one that seemed comfortable with the girls, will pop into the local vet and see what they have.

Thanks everyone, your all so helpful.
Clever little bugger has already figured out the girls can't get up the steps but he can so he climbs through the gate and has fallen asleep at the top of the stairs, it's quiet warm up there so have left him some water but he seems quiet happy
The girls love him.