
Thanks everyone for your replies.
Thanks Carrington, I'd previously had a look at Supernanny's site, which is where I got the idea of ignoring her and focusing all the attention on the child she has bitten. It's only been done once (last Thursday), so I'll continue using this method when I'm there. I printed off that link and gave it to nursery to have a look at. Their concern is that if they turn their back on her, she'll bite another child.
There is one child who apparantly she just doesn't get on with and vice versa. Although this child doesn't bite, I'm told she gives as good as she gets. She bit this child three times yesterday and another child once. :( It really seems to be getting worse. The nursery staff have been discussing her, but seem to be at a loss and think she'll grow out of it, but I feel that it's been going on for too long as it is and it's really not acceptable. :(
I'm going to speak to the doctor when I'm next there and mention about a hearing test, although nursery are in agreement that she seems to hear fine and they do see her speach improving.
It is really stressful and I wish she would just stop, as she's a really good kid otherwise. I don't want her to turn into a bully and think that this is acceptable behaviour. :(