H and I are in the process of separating. It was a mutual decision and quite amicable at the moment. I haven't moved out yet but am looking for somewhere. We have a joint mortgage and will share the care of DD, all of which we have agreed upon verbally but are conscious we should get it done formally, in case things go bad later on. H is also flipping backwards and forwards about helping me pay for a new car, which I think he should considering I've paid for half of his car and mine seriously needs an upgrade.
My question is - what makes a document legally binding? We're hoping to avoid using lawyers and as things are ok at the moment we think we can agree on what we need to.
TIA.