o yes, just read the bit about custody. I am a children lawyer, a fmaily lawyer who speciliases in Children Act work. He wouldn't have a hope.
Not sure how old they are but any of the below may be handy to bear in mind if you think a fight over residence of the kids is looming:
His V Your ability to get supportive statements from nursery workers / teachers about who picks them up / comes for parents evening / comes when they are sick.
His V Your ability to get supportive Statements from GP about who takes them to their appointments.
His V Your ability to get supportive Statements from fellow mums who you've met at parenting groups etc.
His V Your ability to get supportive Statements from any of your family members who have seen what you have been going through.
And then depending on the ages of the children, the CAFCASS officer (court employed ex social worker) will speak to them and sound them out - not at all ask them who they prefer or anything as damaging as that, just chat to them, and find out what they want and what they need. I have rarely seen them get it wrong when they have had the time to do it properly.
Do not, for one minute, stay with this man if it is custody you are worrying about. He may be clever, but you are their only loving parent.
Also - if you're married - he'll have to pay for you and the kids anyway. And if he earns loads - he'll have to pay loads! Start copying the odd pay slip and bank statement now if you can get away with it - just incase he starts playing games with you once the divorce petition drops into his lap.
Good god woman, get OUT of there!!!!