Thanks for that. We do have two children, 6 and 8, who live predominately with me but care is shared and seems to be working well for all.
We do both work and historically I always earnt slightly more than him but since the split I haven't had any information regarding his finances so until the form E's are exchanged I won't know of any differences between us. He is director of his own limited company however, with a very creative accountant, so I'm sure he'll only be declaring the bare minimum :o(
Still waiting for a first appointment so I guess it's just wait and see.