With all of the agencies undercutting each other and the daily supply rate from the LEA being so massively undercut that schools simply won't pay it anymore, my daily rate is being eroded slowly.
It is thoroughly depressing. I cannot haggle, there are too many of us out there competing for the work.
I have just secured a six week supply cover at a local school. I approached the head about this work. My agency has offered me five pounds a day LESS than I normally get. I am sure this is so that they can bump me up to my normal rate and make it sound like they are doing me a favour. I will argue the case but I don't hold any of the cards and I need the work 
I am not that impressed at having all the responsibilies of a class teaching at only a normal supply rate.