Question Author
Thanks for all the answers.
I have tried some of the above answers and my daughter has improved. she isn't hitting the baby or even being violent. Shes not perfect as she doesn't share with her or anything, but this is manageable compared to before.
As far as my baby being 'scared' when the eldest walks in the room. I think this has been taken too literal. The baby didn't run for cover or cry lol. She was just wary and watchful I suppose. I clearly wrote this wrong. If my baby was quaking with fear, I'd have more than just jealousy problems. Apologies for the misunderstanding in what I wrote. The times my eldest did attempt to hurt the baby is usually if I gave the baby attention, which to me explains it's just jealousy, which does suck for us all, but has improved majorly. My daughter has broken up for school now and again her behavious has dramatically improved, she hates school. I think this is another reason her behaviour was rubbish as she knew the baby was at home with me.
I did mention it to my health visitor who simply just advised me to do all the things I'd already tried. As previously stated though, things are much better now. I keep my eye on them and so things will be ok :).
I thought I'd better explain better as my original post sounded like the baby was being physically battered and bruised by the eldest, which is totally not the truth. As of I'd even contemplate writing in a forum if that was the case.
Bottom line is. Things are better and improving and I have two happier children, which means one happier mummy. I hope this has cleared things up a bit from my original post.
Thanks x