NODM - as I said, he's a t**t, I dont label him that flippantly. Yes he is abusive towards me infront of DD (4). I hate the fact that he rears his ugly head every two weeks, DD and I have a normal and happy life and then he upsets the apple cart. I try my absolute hardest to shelter her from his outbursts, never the less he has no thought for DD when he is shouting at me down his drive, throwing her toy at the car last time, so you get the general idea. Everything, absolutely every little thing is about him, so long as he gets things off his chest he has no consideration of the impact upon DD witnessing this.
DD loves her Daddy. He manipulates her when she is in his care, she says things like "dont be unkind to Daddy", "Daddy doesnt like you because you dont like him" upon her return. 
MRGIN - No he's not in grateful in the slightest, he thinks it is my responsibility to do one of the journeys "and if you dont then I'll be claiming a reduction in my payments to you through the CSA for petrol". 
I think this weekend, when the ineviatable once fortnightly text is received bluntly asking which journey I prefer to do, I will reply that I wont do either one of them.
Its good to hear advice from a man, thanks, I appreciate your thoughts. If he was fair as you are, I would have no hesitation in helping out with anything.
All I keep telling myself, when he assures me that he will make sure DD hates me when she's older, is that she will find out for herself what her Daddy is made of. 
Thanks all, enough said.