I'm ignorant of all things custody based as my own parents settled access amicably. I'm asking as I'm trying to support a friend who is being horrendously bullied by her exH.
He cheated and got the OW pregnant. He is very wealthy on paper and has gone through the motions of reconciliation to try to stop her claiming what she's entitled to. That hasn't worked and now he's indirectly using their DCs to punish and threaten her. He's an absolute cock.
What's the worst that could happen though? Would a court be likely to give him 50% custody by deafault?